Team Teaching: Share in the Benefits

By Len Wittrock, Educational Consultant, PADI Americas. 2006 Undersea Journal

Team teaching, isn’t that something you do when you have a huge class or when you’re new? Many PADI Pros share in this sentiment until they learn the benefits associated with team teaching. When I first started teaching, I was required to team teach my first two courses with a more experienced instructor to help me “learn the ropes” more quickly. I’m glad that policy was in place because it introduced me to the advantages of team teaching, not only as a new instructor learning the ropes, but also as a way of capitalizing on instructors’ individual strengths and experiences to enhance student learning. Needless to say, I continued to team teach whenever possible even though the dive center no longer required me too.

A few of the benefits and considerations associated with team teaching include:

· Approaches to team teaching
· Preserving integrity in the class; and
· Capitalizing on different teaching styles and/or philosophies

Approaches to Team Teaching
A common problem students have is trying to balance time for diving along with everything else going on in their lives. This is true for instructional staff as well. Many instructors are amazed by how much time they regain when team teaching as apposed to teaching independently, with and without assistants. The instructors I’ve spoken with about team teaching all agree that class preparation, administrative work and pool time go much faster and more smoothly when they have another instructor with whom they can share the workload. That said, there are different ways to approach or set up your program to best maximize your time.

The first approach is called segmenting. In this approach, depending on how the course is structured, instructors teach the knowledge development portion of the class on rotating days. This allows instructors to teach large portions of the course without having to present for the entire course. It also gives them the opportunity to teach those knowledge development sessions with which they are more comfortable or about which they are more passionate. This approach can also be carried into confined and open water sessions as well.

Segmenting also allows instructors to conduct more than one class at a time, freeing time for other classes. Or, should one instructor become ill or otherwise be unable to make the scheduled class or pool session, having another instructor on hand to step in prevents students from having to reschedule a class or pool session. Since the students are already acquainted with the alternate instructor, this type of hand-off goes a lot more smoothly.

A second approach to team teaching is the tag-team method. In this approach each instructor is present for the entire course. As with segmenting, each instructor has the opportunity to facilitate areas of the course in which they have the most interest or experience. From the participants’ point of view, tag-team teaching is appealing because it provides variety and allows students to learn from their instructors’ differing experiences and perspectives.

One possible consideration with this approach is to pair male and female instructors. One of the biggest advantages of this is that, according to the many students and instructors I have asked, students prefer to go to an instructor of the same gender with some questions.

One male and female instructional team I spoke with recently told me the majority of their classes are mixed and that the women, in many cases (though not all), prefer talking to and getting advice from the female instructor and vice versa for the male students. Not surprising considering PADI's market research tells us women and men often have very different reasons for learning to dive or for continuing education. Having a male and female instructional team on hand from whom the students can seek guidance may, in some cases, help ensure a more positive experience for participants and staff in mixed gender classes.

The third and last approach I’ll discuss is the A/B approach. As with tag-team teaching, both instructors are present to facilitate the entire course at the same time. However, with this method, the class is divided into two groups. This approach is ideal if the class is large. Or is limited in space in the classroom or pool. By dividing the class into to two groups, it is easier to maximize pool and class time. Simply schedule group A in the classroom and group B in the pool during the same time period, switching groups when each session is complete. Doing this ensures classes stay on schedule, allowing everyone to finish at the same time. Both groups can come together during the open water sessions, but remember to make sure ratios are within standards. A great way to do this is to use certified assistants. They add more flexibility, control and fun to classes.

Though this article deals mainly with scuba courses, a series of courses that work well with the above mentioned approach is Emergency First Response and DAN courses. These courses lend themselves well to team teaching, particularly during skills practice where dividing the class into two or more teams maximizes student time with mannequins and/or Automated External Defibrillator (AED) units.

Preserving Integrity
When I was a Divemaster working with a class as a certified assistant, it felt good to have students ask my opinion on all kinds of dive topics. The title “Divemaster” brought with it a certain amount of respect and credibility that made working with classes a very positive experience. Maintaining integrity, professionalism and credibility of all instructional staff is important for effective working relationships. During introductions, make sure everyone in the class is aware of the staff members’ roles, responsibilities, relevant back-ground and experience. In addition, be careful that one instructor doesn’t come off as or appear to be the lead or head instructor. This can quickly cause students to ignore one instructor or assistant and overwhelm the other(s).

Capitalizing on Different Teaching Styles and/or Philosophies
One of the first things you’ll want to do when team teaching is get together with the other instructor(s) to discuss how the course will be conducted. Be sure to talk teaching styles and individual philosophies or motivations for electing to teach certain sections of the course. It may simply be that one instructor is more passionate about a knowledge development session or confined or open water training dive than another. You may find that you have completely different approaches to a specific skill and knowing this in advance will ensure that students are shown that there’s more than one way to perform every skill. In addition, discuss how each instructor will promote continuing education. This is another area where you’ll want to have a consistent message. Be sure all instructional staff see eye-to-eye about different types of diving and specialties to ensure there are no conflicting view points. For example, one instructor may be a strong advocate against taking anything from the ocean except pictures, while another instructor is promoting Underwater Hunter. It’s important to respect these differing views and not argue or show dissent in front of your students regardless of personal feelings as this will destroy your credibility.

Other points for discussion prior to team teaching classes include how to assign buddy teams, fielding questions from students, number and duration of breaks during classes, keeping track of divers during confined and open water dives, tracking performance and keeping paperwork current, different skills techniques, etc. All this prior planning ensures students don’t get confused, especially if instructors use different techniques or prefer, for example, one method of mask clearing to another. Be sure students know that there is more than one way to meet a performance requirement, giving them more opportunities for learning.

Of even greater importance is how instructional staff communicates with each other during class. Students are watching closely and have a tendency to mimic their instructors. It’s important to set a good example because, in many ways, team teaching models the importance and fun of diving with a buddy. Don’t contradict another instructor or argue in front of a class.

While team teaching is not necessarily for everyone, or all situations, it can be very rewarding and a beneficial experience for those who choose to do it. Instructors, dive centers and students all benefit from the increased flexibility and differing teaching styles, approaches and experiences. Try it, you may find that you enjoy it more than teaching solo.

It’s all About Bottom Time!

As a diver, it’s all about staying underwater as long as possible, so as to enjoy everything there is to see. It’s also why we return time and time again; after all, you can only stay so long! Extending our time underwater to see and enjoy as much as possible has been the goal of divers since the beginning of underwater exploration, and it's still true today.

There are several factors that determine how long you can stay underwater at any given depth without going into a decompression. After all, as recreational divers avoiding going into decompression on a dive is paramount. Aside from factors such as nitrogen and oxygen loading, depth and time limitations, whether your breathing air or enriched air (nitrox), factors that determine a divers bottom time can include cylinder capacity, lung capacity, rate of breathing, energy being exerted, proper weighting, being streamline, currents and water temperature to name a few. This means there are some things you can teach your students that can help them improve their bottom time.

In this article, we'll look at Proper weighting, cylinder size and capacity, streamlining yourself, breath control, energy conservation, efficient fin kicks (good swimming techniques) and thermal protection as ways a diver can improve their air consumption to increase bottom time.

I’ve seen many instructors talk about proper weighting but very few actually teach and assist student divers with proper weighting. All too often, for many instructors, proper weighting means weighing students down with too much weight to ensure they get down and stay down during training! Believe me, spending a little extra time properly weighting their students by distributing the weight over the student divers entire body goes a long way in ensuring they are both safe and efficient. Remember, you want them to have fun in your class. You need to go beyond the general rule of thumb when teaching students about weighting. During your confined/confined open water training, use ankle weights and various clip on weights to distribute weight over their entire body to demonstrate how proper placement of the weights, in addition to using the appropriate amount of weight, will not only help them get down and stay down, but will help them be more streamlined in the water without being over weight. With integrated BCD’s, don't just jam all of the weight into the pockets/pouches. Just because the BCD is weight integrated doesn't mean you cannot incorporate other types of weight systems to ensure proper weighting.

Here in Southern California the water is considered "temperate." Most people dive in 7mm wetsuits with hoods or they dive dry to stay warm. To dive comfortably, many use ankle weights, especially the dry suit divers. However, ankle weights are not limited to use by divers using around their ankles. Be creative. You can use ankle weights to help distribute the weight more evenly by placing them around the tank neck, through the chest strap, etc.

Breathing efficiently underwater is one of the main keys to maximizing bottom time. The key is to get your students relaxed enough to slow their breathing rate down as much as possible, avoiding holding their breaths. I liken it to being so relaxed you almost begin to fall asleep. I remind my students and instructor candidates that diving is an activity that's more of an adventure, something to be enjoyed and savored for as long as possible. Slow deep breaths with an emphasis on exhaling completely will help slow their breathing rates down. To help students with their breathing, I will ask them to time themselves using their watch. How long does it take to inhale a full breath vs. exhaling it. I tell them it should take almost twice as long to exhale while diving. This really helps students to slow their breathing rates down.

Another very important consideration is their fin kicks. The emphasis is not on what fin kick they use, i.e. traditional kick, dolphin kick or frog kick but rather on efficiency and proper technique. We’ve all seen the “bicycle kick.” Slow deliberate kicks using the proper technique or kick stroke, is the key to efficient fin kicks. Keep in mind that energy conservation is also very important. I instruct my students to glide through the water using as few kicks as possible. To further emphasize the benefits of moving less and gliding more, I remind students that an added benefit of more gliding and less kicking is being able to see more sea life by moving more gracefully like "fish."

Streamlining yourself in the water helps to slow air consumption and maximize bottom time. The more streamline you can be in the water, the easier you can move through the water and the less energy you have to expend getting from one place to the next.

Another consideration is cylinder size and capacity. When considering a cylinder you'll want to balance all of these factors in order to help them make the best choice. We know that steel tanks are heavier than aluminum and tend to be smaller/shorter while holding the same amount of air as an aluminum cylinder of equal capacity. With that, depending on which type of cylinder they select they'll need to factor their weight system into the equation as well as their own height.

Lastly, thermal protection can affect bottom time too. A diver that is too cold can have the tendency to use more air than a warmer diver as the body works harder to keep the vital organs warm. As the body starts to shiver it can also cause the diver to breath very shallow and rapidly which leads to faster air consumption. Ensure the proper amount of thermal protection to maximize their bottom time and to minimize potential safety issues.

As you discuss all these factors with your students ensure they see and understand the important relationship each one has on the other. The equipment they use should make diving more comfortable and safe, not just possible. Doing so makes for a richer course for your students and greater satisfaction for you as an educator.

Pre-dive Safety Check; are you truly ready to dive?

Whatever acronym or mnemonic you use, the idea is to instill the need to make sure everything is working and that you and your buddy are ready and willing to get in the water for the dive. All too often instructors move through this part of basic training all too quickly and wonder why their students abandon pre-dive safety checks after certification.

As a PADI Course Director I’ve been brought up using the, “Begin With Review And Friend” mnemonic to remember the touch points in the pre-dive safety check. You may use the, “Blue Whales Really Are Fun.” Whatever you use to help your students remember the steps is fine. What I see missing more than anything from the training of this important practice is the objective or reason for checking each article of your kit.

Begin or Blue has to do with the BCD. Specifically, we want to make sure it holds air and is not leaking anywhere. Emphasize checking all of the dumps to ensure they work as well. We also want to make sure the low pressure inflator hose is attached and also works and is not sticking. Once that’s certain we move to the next point in the check.

With or Whales has to do with the weight system. Not just is it on or in place, but do we have the appropriate amount of weight for the exposure suite we’re wearing and for the dive site. That is, are we diving in salt water or fresh water? I try to reinforce the need to ask how much weight their buddy is using and if they’ve recently taken steps to ensure proper weighting. Many students and certified divers get in the water with too little or too much weight only to head back for the shore or the boat to adjust. This is also a good time to make sure ankle weights are on and secure, if they are being used.

Review or Really deals with the releases on the BCD and or weight system. The emphasis is not just on where your releases are for your kit, but getting familiar with your buddies releases; where they are located and how they work is very important. This for the unlikely event an emergency requires removing the gear off of your buddy to provide emergency aid. I also like to include the location and use of alternate seconds, and or air sources at this step.

And or Are is for air. I have my students place their primary regulator in their mouth and then look at their pressure gauge or computer while taking a couple of breaths. This accomplishes several things at once; determines if the air tastes good and is not contaminated, is the cylinder valve on, partially on or off and confirms how much air I have at the start of my dive. I also instruct my students to make sure their buddy knows how much air they have as part of the dive planning process. Don’t forget to ensure that the alternate second or alternate air source is also working properly, etc.

Friend or Fun is the final check and OK. For me this is a critical last step before entering the water. In addition to making sure each diver has their mask, snorkel, if you dive with one on your mask or in your BCD pocket, fins, signaling devices and whatever else you need to bring along for the dive, I also like to emphasize that this is the opportunity for anyone to call off a dive for any reason with no peer pressure. Diving is fun and should be fun for everyone involved. If a diver has any reservations about a particular dive or is feeling at all anxious about the dive, I like to make sure they understand that calling a dive off is OK and will not be looked down on. Divers who enter the water apprehensive, anxious or unsure about the dive lose focus and are far more likely to may mistakes or errors in judgment which could lead to problems and or injury. To help divers feel more confident about the dive I also emphasize going over the dive plan during this last step in the pre-dive safety check. Quickly review what the dive objective is and the signals you’ll use to communicate vital information and what your turn around or return cue and determination will be.

The pre-dive safety check is basic and yet too many divers, especially at the professional level, skip this step all together or move through it too quickly. Many of the incident reports involving serious injury involved professional level divers who made poor decisions and or skipped procedures they teach their students to follow. We need to constantly role model good behavior to our students, and the best way to ensure you never forget or leave something out is to make it a regular habit on every dive you make with or without students present.

Alert Divers Learn More and Earn you More!

Are your students dragging their heels in class? Do they leave the pool drained of energy? After a couple of dives in the open water, are they ready for a nap? If you’ve answered yes to any of these questions then you may be asking yourself, can I do anything about it. Well, you might be surprised to learn that there are some easy ways to help your students stay more alert during your class time that can also increase your business.

First, consider how you schedule classes. This can be a challenge for many reasons. Let’s face it, time is money but we don’t want to make the mistake of thinking that faster is always better. Balancing speed and efficiency with superior customer service is always a tough act. Doing so well, will ensure repeat and referral business which will definitely equate to bigger profits. Start by setting realistic expectations upfront as this is critical to your success. Planning enough time for your students to assimilate the information and time to practice skills to truly gain mastery is the goal. If you teach for a dive center this becomes very difficult to do unless you have a store owner or manager who will listen to reason and or has already built-in a reasonable amount of time for learning and instruction. Remember you want to communicate that future profits are at stake! One thing to consider is multi-level training. This is not a new concept but it is one that very few instructors and dive centers take advantage of. Teaching multiple levels at once is a great way to ensure optimum efficiency while providing great word of mouth marketing.

For example, Monday nights might be your orientation night. You and your staff, or if you teach independently and have another instructor(s) and assistants you teach with, meet and greet the students. Right off the bat your students get to know everyone, staff and other students, and they learn about the other programs available, both from you and the students enrolled in them. Tuesday night may be Open Water classroom while your Advanced class is in the pool with another instructor reviewing skills or practicing new skills like reel use, lift bag use, etc. Wednesday through Friday night you continue to rotate between Open Water and Advanced or perhaps Rescue, etc. in the classroom and pool till all work is completed. The weekend is typically when the open water training takes place, so make sure everyone breaks at the same time by choreographing breaks and lunch so your students are all together to share their experiences from the morning dives. This again allows the students from the different classes to promote the various courses you offer to each other. It was not uncommon for my OW students to immediately enroll in Advanced, Advanced students to enroll in Rescue and so on, because they wanted to do what the other students were doing.

Another thing to consider that is very important and is often overlooked is nutrition! Do you provide healthy snacks and drinks for your students? You’d be amazed at how simple this is to do and how inexpensive and beneficial it is. For one thing, you can always add/include the cost into your classes. The cost is low enough that it won’t increase your overall class cost significantly. When your students see that you’ve provided snacks and drinks for them they will not only feel better and do better in your class, they will remember the level of care it communicates to them. It builds trust in them for you as an instructor and increases customer satisfaction significantly and what better way to role model the benefits of good nutrition and staying hydrated than by providing the very things they need to be fit and have fun! The few dollars you spend on snacks and drinks will add up greatly in terms of repeat and referral business for you.

Dry Suit diving and KY Lube

Here’s a great tip for your Dry Suit students. Lube up with KY Jelly or any equivalent. The .99 cent stores usually have a cheap no-name brand you can buy for this specific purpose.

If you dive dry, whether you have latex seals or neoprene, getting through the neck and wrist seals can be tricky for some, especially after a dive trying to re-don your suit wet. The obvious problem with talc is that it gets gummy when wet. If the suit is dry, no problem, but you’ll probably do more than one dive in a day, especially if you're on vacation or on a dive boat. If you over use talc, this can happen by accident with new dry suit divers and more experienced divers too, it can potentially foul up your exhaust valve. There is a better way, KY Jelly. I know what you're thinking, but don't write it off just yet.

The advantages with KY are:

· It's water-based and dissolves in water quickly
· It makes donning your suit very easy
· It won’t harm latex or neoprene
· It doesn’t gum up or foul up valves
· It's odorless
· It wont stain clothing or other materials
· A little goes a long way saving you money
· And it's Biodegradable and will not harm the environment

So get rid of the talc and switch to KY Jelly or an equivalent for those neck and wrist
seals. You’ll be glad you did!

Do your students trust you?

The most successful instructors are the ones who earn and keep their students trust. If they don’t trust you to keep them safe and to make diving fun they may not do as well as you’d like them to. That’s in a best case scenario. In a worst case scenario, they will not finish their course, at least not with you, and may tell everyone they know and or come in contact with to avoid you for any scuba training. Sadly, I can name a few instructors who are not very well trusted by their former students. So then, how do you earn their trust?

First, let’s take a look at what trust is. Trust is comprised of Character and Competence, or in other words, integrity and credibility. These two elements must go together to form real trust and credibility. Without both Character and Competence you wont earn the trust of your students and will lose any trust and or credibility you might of had. Many instructors out there are mediocre at best. Most instructors are competent, but lack character. Put another way, they have really good skills and know how to dive well, but lack follow through and or character.

I’m not talking about personality or likability. I’m talking about genuine caring for the students and making every effort to ensure their students are having fun and are safe. All too often I see instructors who want to get their students through the program as quickly as possible, so they can move on to the next group and or course. The cost of operating this way can be extremely high as students go elsewhere for instruction and promote others over you.

I try to emphasize and reinforce with my IDC candidates the idea that teaching is all about the student(s). If you’re going to be highly effective and successful it has to be all about the students and not about you. You need to make every effort to ensure they are safe and having fun or they will go elsewhere for instruction. Stay up to date on the latest equpment trends and new technology.

Secondly, many instructors lack competence. Let’s face it, you could have an instructor who is very honest and may have a lot of integrity, but if they lack competency, you may not want to place your life in their hands. Would you want to be, or would you want your family to be, led by someone who is not capable of ensuring your or their safety?

Bottom line, you need to have both good skills and high integrity. You need to know the standards and you need to get to know your students and their needs. Learn to look for signs that they may not be having fun and address it. Don’t discount how they feel either. If they feel anxious or nervous, take the time to reassure them and or reschedule if necessary to ensure they are having fun.

I can say with all assurance from my own experience, taking the time to earn your students trust makes all the difference in the world.

Reel Basics

Teaching students how to use a reel can be both fun and challenging to say the least. The most common problem students encounter, many experienced divers for that matter too, is how to keep the reel from getting tangled up or getting fowled up. The biggest problem I've encountered with students who tend to foul up reels is not keeping the line taut. It's important to emphasize the need to keep just enough tension on the line to prevent the line from tangling on the spool. Another culprit is guiding the line smoothly back onto the reel as the diver reels it in. Be sure to show and reinforce the proper technique for guiding the line back onto the reel as they wind it in. The most common way to do this is to use the index finger to move the line from left to right, back and forth to keep it even on the spool.

Next, find a large enough space to practice in. I like to use densely wooded areas to teach proper reel use and handling. However, if you live in an area devoid of trees, a parking lot, preferably a grocery store with lots of shopping carts, works very well too. Point is, you need a large area so they can practice, and be creative with your space. If you must use a parking lot with lots of shopping carts, set them apart at least 15ft away from each other and preferably in the shape of a ship or some other object your students will most likely dive, to add some realism to your practice drills. For the demo, I like to have the students follow next to me as I demonstrate proper use of the reel as I simulate entry and then exit from a structure. Then I have each student practice solo until they get the hang of tying off the reel and reeling it back in without tangling or jamming it. I then have them practice leading a team into the "structure" and then back out with each student getting an opportunity to lead the rest of the team of divers.

This is not only effective, its also fun for the students and helps build a lot of confidence before practicing these critical skills in the open water environment. The real test is when they have to do this blind folded to simulate silt outs. Don't forget to have them wear their gloves, if applicable. You can create more fun by creating teams and challenging them to some friendly competition.

Navigation 101

Giving students an opportunity to practice skills in a controlled environment helps ensure proper technique and gives students the opportunity to gain confidence with their new skills before applying them in an open water environment. This method of instruction has proven to be very effective and is why it's an industry standard. However, controlled environments are not limited to watery environments only. A very effective way of teaching divers to navigate by compass is by practicing in a parking lot or on the beach. Any area or location with plenty of space to walk a fair distance can be used effectively for teaching and practicing this basic and very important skill.

I like to start by orienting them to proper compass use and familiarity with the different parts of the compass, i.e. the dial, lubber line, etc. Once everyone is comfortable with the compass and can turn their bodies in the correct direction/heading, I then have them practice counting their paces to reach approximate distances. I have them simulate kick cycles with their paces. In addition, we also talk about using time to measure distance and discuss other methods for measuring distances as well, and once they demonstrate consistency walking and counting so many paces to reach an approximate distance, we tie it all together in simulated dive.

A great way to help them learn to trust the compass is to have students place a beach towel over their heads so they can’t see where they are going, yet are still able to read the compass. Have another student or assistant walk beside the student using the compass to ensure they don’t get tripped up or run into anything while practicing their compass use. After every student has had an opportunity to navigate various patterns making both left hand and right hand turns coming within 5ft of their starting point, they are now ready to test their new skills under water. Again, you can add more fun by having a contest over who can navigate back closest to the starting point. Include prizes and other recognition to make the competition more exciting.

Is it distress, shock or nothing at all?

Over the years I’ve heard many well meaning divers and instructors tell divers who like placing their mask on their forehead, "this is a sign of distress." Fact is, this is simply not true! I know, you’re going to say that your instructor, who I’m sure is a good instructor, told you differently. They were wrong. It doesn’t matter if you look at PADI, SSI, TDI, NAUI, etc. standards, they will all confirm that the mask on the forehead does not necessarily mean “diver in distress.”

So why all the fuss about not wearing your mask on your forehead? Good question! If you really want something to be concerned about, tell them the truth; far more masks are lost by divers because they placed them on their forehead than for any other reason. So, if it still bothers you to see a diver with their mask on their forehead let them know they run the risk of losing it but don’t tell them it’s a sign of distress. That happens after they lose their $50.00 mask and $30.00 snorkel!

All the way on or a 1/4 turn back, that is the question?

There are two schools of thought on this issue. One says you should turn the tank valve back approximately ¼ turn once it’s opened all the way, the other says turn it all the way till open and leave it there. The first line of thinking, turn it back a 1/4 turn, will tell you that it's to protect the valve from getting stuck. The other line of thinking will tell you to turn it all the way open and leave it open to reduce the risk of turning the valve the wrong way so that its off instead of on. So who’s right and does it matter? Turns out that there have been no reported mechanical malfunctions with a tank valve that has been turned all the way on without turning back a ¼ turn; further more, there have been no reported incidents due to tank valve failure for any reason. As a Tech Diver in training, I have been taught to leave the tank valve all the way open to reduce the possibility of turning the valve off, mistakenly thinking to turn it on during a very deep and long dive. Life and death can lie in the balance if that tank valve is off vs. on. I’ve also asked various engineers for their opinion on this issue and most have admitted that leaving the valve open is safe. It’s highly unlikely, and it would be extremely unusual, that you would have an incident from a faulty tank valve.

So all the way on or a ¼ turn back, you decide. But from the evidence I've gathered, it seems that it really doesn’t matter which way you go. I’ll stick to my tech training thus far and leave mine open all the way. I’ll continue to teach my students and instructor candidates to do the same.

A History of Underwater Exploration and Development

The following is a list of events in the history of Scuba Diving.
332 BC - Greek philosopher Aristotle's "Problemata" describes a diving bell used by Alexander the Great at the siege of Tyre (a Phoenician town on the Mediterranean coast of what is now Lebanon).
1500s - Leonardo da Vinci designs the first known scuba apparatus. His drawings of a self-contained underwater breathing apparatus appear in his Codex Atlanticus. Da Vinci's design combines air supply and buoyancy control in a single system, and foreshadows later diving suits. There is no evidence that he ever built his device. He seems, instead, to have abandoned scuba in favor of refining the diving bell.
1535 - Guglielmo de Loreno developed what is considered to be a true diving bell.
1650 - Von Guericke developed the first effective air pump.
1667 - Robert Boyle observed a gas bubble in the eye of viper that had been compressed and then decompressed. This was the first recorded observation of decompression sickness or "the bends."
1691 - Edmund Halley patented a diving bell which was connected by a pipe to weighted barrels of air that could be replenished from the surface.
1715 - John Lethbridge built a "diving engine", an underwater oak cylinder that was surface-supplied with compressed air. Water was kept out of the suit by means of greased leather cuffs, which sealed around the operator's arms.
1776 - First authenticated attack by military submarine - American Turtle vs. HMS Eagle, New York harbor.
1788 - John Smeaton refined the diving bell.
1823 - Charles Anthony Deane patented a "smoke helmet" for fire fighters. This helmet was used for diving, too. The helmet fitted over the head and was held on with weights. Air was supplied from the surface.
1825 - An Englishman, William James, develops a system that several historians consider to be the first true scuba. It employs tanks of compressed air and a full diving dress with a helmet. Limits on useful depth and duration keep it from widespread adoption by commercial divers.
1825 - Charles Condert, an American, develops a compressed air reservoir consisting of copper tubing bent into a horseshoe and worn around the diver's body. The system includes a valve to inflate the diver's suit.
1828 - Charles Deane and his brother John marketed the helmet with a "diving suit." The suit was not attached to the helmet, but was secured with straps.
1828 - Lemaire d'Augerville patents a "swimming belt" designed to enable divers to swim in mid-water and ascend or descend as needed for their work. We now call such devices "buoyancy compensators." But nineteenth-century salvage divers found little use for the buoyancy device, so d'Augerville netted little compensation.
1836 - Charles Deane publishes the first "how to" diving manual.
1837 - Augustus Siebe sealed the Deane brothers' diving helmet to a watertight, air-containing rubber suit.
1839 - Seibe's diving suit was used during the salvage of the British warship HMS Royal George. The improved suit was adopted as the standard diving dress by the Royal Engineers.
1843 - The first diving school was established by the Royal Navy.
1865 - Benoit Rouquayrol and Auguste Denayrouse patented an apparatus for underwater breathing. It consisted of a horizontal steel tank of compressed air on a diver's back, connected to a valve arranged to a mouth-piece. With this apparatus the diver was tethered to the surface by a hose that pumped fresh air into the low pressure tank, but he was able to disconnect the tether and dive with just the tank on his back for a few minutes.
1869: Jules Verne popularizes the concept of scuba in 20,000 Leagues Under the Sea. His central character, Captain Nemo, specifically cites the Rouquayrol/Denayrouze system and theorizes about the inevitable next step - severing the diver's reliance on surface-supplied air.
1869-1883 - New York's Brooklyn Bridge is built, but many of the workmen pay a high price. Emerging after extended hours in high-pressure caissons (dry construction compartments sunk into the riverbed) they become crippled by "caisson disease." Because of the cramped and frozen joints caused by the affliction, reporters dub it "the bends."
1876 - Henry A. Fleuss developed the first workable, self-contained diving rig that used compressed oxygen.
1880 - Dr. Paul Bert, a French physiologist, completes his pioneering work on breathing under hyperbaric (high pressure) conditions. He recognizes that "caisson disease" is identical to problems experienced by deep sea divers, and suggests that it is caused by the release of dissolved nitrogen from the bloodstream. He also shows that oxygen, even the oxygen in compressed air, can become toxic when breathed under pressure. (The oxygen in compressed air becomes toxic only at depths far beyond the 130-foot limit of recreational diving.)
1892 - Frenchman Louis Boutan develops a variant of the closed-circuit system. The Boutan scuba can be used for up to three hours at shallow depths.
1893 - The first underwater camera is invented by Louis Boutan.
1910 - Dr. John Scott Haldane, a British physiologist, confirms that caisson disease is caused by the release of dissolved nitrogen when surfacing. To enable divers to avoid "the bends," Haldane develops a procedure that calls for gradually staged "decompression." His pioneering research culminates in publication of the first dive tables.
1911 - Sir Robert Davis, a director of Siebe, Gorman, refines the Fleuss system and comes up with the Davis False Lung. His reliable, compact, easily stored, and fully self-contained rebreather is adopted (or copied) throughout the world for use as an emergency escape device for submarine crews.
1912 - Germany's Westfalia Maschinenfabrik markets a hybrid dive system that blends scuba and surface-fed components with mixed gas technology.
1915 - An early film of 20,000 Leagues Under the Sea marks the first commercial use of underwater cinematography. Cast and crew use modified Fleuss/Davis rebreathers and "Oxylite," a compound that generates oxygen through a chemical reaction. (Oxylite explodes if it gets wet, a trait that tends to limit its popularity as a scuba component.)
1917 - Draeger produces a true scuba system that combines tanks containing a mixture of compressed air and oxygen (oxygen-enriched air) with rebreathing technology. It is sold for use at depths to 40 meters (130 feet).
1918 - The Ogushi Peerless Respirator passes field tests at 324 feet. The Japanese device combines modified false-lung style closed-circuit rebreather technology with a compressed air reserve. It supplies air to the diver through a manually controlled on/off valve.
1919 - C. J. Cooke develops a mixture of helium and oxygen (heliox) for use as a breathing gas by divers. The mixture enables divers to avoid nitrogen narcosis while diluting oxygen to non-toxic concentrations. It allows commercial divers to extend their useful working depth well beyond previous limits.
1923 - The first underwater color photographs were taken by W. H. Longley.
1925 - Yves Le Prieur releases a very successful self-contained underwater breathing unit.
1926 - An officer in the French Navy, Yves le Prieur, patents the Fernez/Le Prieur diving system based on compressed air carried in tanks. Le Prieur's device feeds air to a full-face mask worn by the diver. Early models provide a continuous flow of air. Later models use a manual on/off valve to preserve the air supply.
Early 1930s - Guy Gilpatrick, an expatriate American writer living in France, waterproofs a pair of pilot's goggles by lining the edges with glazer's putty. Commercial versions of his window to the underwater world soon follow.
1933 - Jack Prodanovich, Ben Stone, and Glen Orr (later joined by Jack Corbley, Bill Batzloff and Wally Potts) start a skin diving club in San Diego - the Bottom Scratchers. This pioneering group, the first of its kind, helps define the sport and creates its own folk legends. (In an era preceding the availability of swim fins, would-be members are required to dive to 30 feet. They have to capture three abalone on one dive, grab a five-foot horned shark by its tail, and bring up a "good-sized" lobster) Those who pass the test include underwater filmmaker Lamar Boren and Jim Stewart, a diving officer at Scripps Institute. Across the country, many clubs followed in the years to come.
1933 - Louis Ce Corlieu patents the first swim fins in France and later in the US.
1935 - Louis de Corlieu patents a broadbladed fin to be worn on the feet by swimmers. The fins make a big splash among free-swimming "goggle" divers. With their help, skin divers and their sport really start going places!
1937 - The American Diving Equipment and Salvage Company (now known as DESCO) develop a self-contained mixed-gas rebreather. It uses a compressed mixture of helium and oxygen in combination with a fully sealed diving suit. Using the new system, DESCO diver Max Nohl sets a new world depth record of 420 feet.
1937 - Georges Comheines creates a scuba system by combining the Rouquayrol/Denayrouze valve with le Prieur's system of compressed air tanks. This breakthrough finally brings to reality the scuba device anticipated by Jules Verne
1869 - Comheines and a group of friends demonstrate the device in a "human aquarium" exhibit at the Paris International Exposition.
1938 - The Compleat Goggler by Guy Gilpatric is released. This book becomes a popular inspiration for skin divers.
1939-1940s - Owen Churchill helps popularize skin diving, making it a hot sporting craze among cool cats living in coastal areas of the United States.
1942 - The Duke Goes Diving. John Wayne stars as a hard-hat salvage diver in Cecil B. de Mille's Reap the Wild Wind. Co-stars include Rita Hayworth, Paulette Goddard, Raymond Massey, Charles Bickford, Ray Milland, and the giant squid that does in The Duke at the end. Cinematographer Victor Milner is nominated for an Academy Award, but only the squid wins an Oscar (special effects).
1941-1944 - During World War II, Italian divers used closed circuit scuba equipment to place explosives under British naval and merchant marine ships.
1943 - The first Cousteau/Gagnan scuba device fails January testing in the Marne River outside Paris and goes back to Gagnan's drawing board for modifications. Subsequent innovations include a novel device that provides inhalation and exhaust valves at the same level. Several months later, the modified device passes tests in a water tank in Paris. During the summer, Cousteau and two close friends, Philippe Tailliez and Frédérik Dumas, test production prototypes of the Cousteau/Gagnan scuba system in the Mediterranean Sea. The device proves to be safe, reliable, and remarkably easy to use. During July and August, the friends make hundreds of dives, thoroughly testing the system and seeking to determine its limits. (Cousteau's wife, Simone, and sons, Philippe and Jean-Michel, also try out the prototype Aqua-Lung® units. That makes the Cousteau family the first to discover that a dive trip makes a great family vacation.) In October, Dumas demonstrates the amazing reliability of the Aqua-Lung® with a dive to 210 feet.That same year, Cousteau and Dumas complete Au DixHuit Mètres du Fond ("Sixty Feet Down"), their first underwater film. To overcome wartime shortages of movie film stock, Jacques and Simone Cousteau splice rolls of still film together. Lacking a darkroom, they work under blankets at night. Cousteau photographs some underwater scenes using a small camera housed in a modified fruit jar.
1946 - Cousteau's Aqua Lung was marketed commercially in France. (Great Britain 1950; Canada 1951; USA 1952).
1946 - Mar-Vel Underwater Equipment was founded and would become an early source for skin and scuba diving equipment as well as the commercial equipment that they specialize in.
1946 - Pat Madison and Everett Edmund incorporate M & E Marine in Camden, New Jersey, and create Mar-Vel Underwater Equipment as a division of M & E. Mar-Vel will import and retail diving equipment ­ primarily commercial hardhat rigs, but also early skin diving and scuba gear. M & E will also manufacture specialized diving and underwater gear, and become a specialty supplier and contractor with major American corporations, the U. S. Navy, NASA, and other government agencies.
1947 - Dumas made a record dive with the Aqua Lung to 307 feet in the Mediterranean Sea.
1947 - Jordan Klein starts a small company, Marine Enterprises, Inc., to manufacture spear guns and housings for underwater cameras. His company evolves into a retail store. When he has difficulty finding a good air source, he goes into the business of repairing and modifying war surplus air compressors. In 1956, Klein will start importing parts from Germany's Bauer organization and packaging his own compressors under the MAKO name.
1948-1949 - Rene Bussoz imports the Cousteau/Gagnan AquaLung® (manufactured by L'Air Liquide through a subsidiary, Le Spirotechnique) for sale in his Southern California store, Rene's Sporting Goods. When the Hollywood film community discovered the new gadget interest in scuba skyrocketed. Bussoz returns to France
1953. The store's new management, an executive team from Le Spirotechnique, transforms Rene's Sporting Goods into U. S. Divers which becomes a leading manufacturer of diving equipment.
1949 - Arnold Post starts selling the Aqua-Lung® and related scuba gear at "Richards Sporting Goods" (now "Richards Aqualung Center" and still operating at the same location) in New York. At the same time, Charlie Marshall offers the Aqua-Lung® for sale at the exclusive New York outfitter "Abercrombie & Fitch." In Chicago, Vem Pederson stocks the Aqua-Lung® at his medical gas supply business, "Chicago Oxygen."
1950 - The International Underwater Spear Fishing Association holds the first national skin diving competition at Laguna Beach, California. Organized by Ralph Davis, the competition pulls together many underwater activities. It is won by the Dolphin Club of Compton, California.
Early 1950s - Entrepreneurs in coastal cities all around America launch dive retail operations. In California, Bob Lorenz opens "Water Gill," presumably the first specialty retail store for scuba divers, in Venice; Mel Fisher opens "Mel's Aqua Shop" in a Torrance feed store; and Bill Hardy and Bill Johnston open "San Diego Divers Supply." In Florida, Paul Arnold opens "Aqua-Lung, Inc." and Jordan Klein opens "Underwater Sports" (originally named "Marineland") in 1951. They soon face competition from Lou Maxwell's "Florida Frogman." Back on the West Coast, Bob and Bill Meistrell start "Dive 'N' Surf" in Hermosa Beach, California, in 1953. That makes "Dive 'N' Surf" the West Coast's oldest diving specialty retailer in continuous operation. In Boston, James Bliss starts retailing scuba gear at his marine products wholesale distributor in 1954. Gustav dalla Valle, the émigré scion of an aristocratic Italian family, begins importing scuba and skin diving equipment made in Italy by Eduardo Cressi to the United States. Dalla Valle later sells the Cressi distribution contract to Dick Kline at Healthways.
1950 - The International Underwater Spearfishing Association was founded. The primary person responsible in the United States was Ralph Davis. The first U.S. National Underwater Spearfishing Championships were also held that year.
1951 - Skin Diver Magazine was formed by Chuck Blakeslee and Jim Auxier. The magazine became the central source for information on the industry. Chuck and Jim were both avid divers and put much of the magazine's profits toward improving the sport. Among the projects they funded or created over the years were the first sport diving museum, The National Diving Patrol, NAUI, The International Underwater Film Festivals, the Hannes Keller dive, and many other early projects and events. Note, post 911 (Sept 2001) economics helped bring this magazine to an end.
1951: A European manufacturer, possibly Le Spirotechnique, produces a new tank valve that can be set to reserve part of the air supply. The "reserve" can be used by the diver after the main supply is depleted. The first U. S. Divers catalog, published in 1953, designates the reserve valve with the letter "J," and it becomes known throughout the industry as the "J-valve." Its catalog companion, the "non-reserve" device, is still known as the "K-valve."
1951 - Hans Hass publishes Diving to Adventure and inspires many newcomers to the underwater world.
1951: Rachel Carson publishes The Sea Around Us. Her scholarly yet poetic book about the oceans wins several prestigious awards and tops bestseller lists for almost seven months. Today, more than 40 years later, The Sea Around Us continues to win new friends for the marine environment.
1952 - Silent World was released by Jacques-Yves Cousteau, Frédéric Dumas, and James Dugan. Silent World tells the story of the invention and underwater adventures of the early Aqua-Lung and becomes one of the most influential books in bringing new people to the sport of SCUBA diving. Many skin divers decide to buy an Aqua-Lung based on this book.
1953: Dr. Eugenie Clark publishes Lady With a Spear. It becomes a Book-of-the-Month Club selection and will be translated into eight languages, plus Braille. The popular book gives women divers a role model of their own.
1953: Robert Wagner, Gilbert Roland, Peter Graves and an antagonistic rubber octopus star in Beneath the 12 Mile Reef, a film about diving for sponges off the Florida coast. The critics say it's a sinker. But crowds flood the theaters, and the underwater cinematography of Edward Cronjager receives an Academy Award nomination.
1953 - Popular Science gives directions on how to make your own scuba equipment using surplus military parts.
1953 - E.R. Cross publishes the immensely popular Underwater Safety.
1953 - Los Angeles Sports Director Al Tillman and Lifeguard Bev Morgan are sent by Los Angeles County to attend a scientific diver course taught by Connie Limbaugh at Scripps Institute. Connie was famous in the diving industry and was even called the "Greatest Diver in History" by Skin Diver Magazine. The informal course covered everything from surfing and underwater explosives to SCUBA and first aid along with the scientific aspects of diving.
1954 - Al Tillman and Bev Morgan develop the first public skin and scuba diver education program in the United States. The Los Angeles County program quickly becomes the template for all programs that were to follow.
1954 - The Science of Skin and Scuba Diving is published by the Council for National Cooperation in Aquatics. This becomes the cornerstone textbook for diver education.
1954 - The television program Kingdom of the Sea starring Zale Parry is aired. Parry becomes a national celebrity, especially within the diving industry. That same year Parry also broke the depth record by diving to 209 feet near Catalina, CA - only stopping because she hit bottom. After the show and the record dive she becomes a hero to women around the world and many new female divers join the sport.
1954 - Kirk Douglas, James Mason, Paul Lukas, and Peter Lorre star in Walt Disney's popular remake of 20,000 Leagues Under the Sea. It wins Academy Awards for art direction and special effects.
1955 - Jane Russell, Richard Egan, and Gilbert Roland star in a Howard Hughes film, Underwater! Promotional posters feature scantily-clad Hollywood newcomer Jayne Mansfield. The film premieres at a Florida spring. Some of the guests wear scuba gear to watch divers search for sunken treasure. Or maybe they just watch Jane and Jayne.
1955 - Due to the massive popularity of the Los Angeles County program Tillman and Morgan create the first formal instructor certification program. Many famous divers were brought in to both teach and become certified.
1955 - Sam Davison, Jr., introduces the "Dial-A-Breath," a double-hose, double-diaphragm regulator, complete with a built-in low-pressure reserve and variable breathing resistance. It helps touch off a competitive frenzy, as other manufacturers seek special features to distinguish their own lines of equipment. Davison goes on to build his own equipment manufacturing company, Dacor.
1956 - The first wetsuit was introduced by researchers at the University of California. Edco produces the first suits.
1956 - Ted Nixon introduces a distinctive red and white "diver down" flag to warn boaters to stay clear or slow down to avoid injuring nearby divers.
1957 - Al Tillman and Zale Parry organize the first International Underwater Film Festival. Subsequent festivals were held in various cities around the world.
1958 - Sherwood Manufacturing purchases the patent for the piston regulator. (The price asked and received by the inventor is that he be taken to lunch once a year.) Sherwood engineers modify the regulator for use in scuba equipment, as a replacement for the diaphragm regulator originally created by Rouquayrol and Denayrouze in 1864. Sherwood will manufacture pistonvalved regulators in various configurations for sale by U. S. Divers, Voit, Healthways, Swimaster, Scubapro, Dacor, Nemrod-Seamless Rubber, and others, for many years. Various versions of the device are still widely used throughout the industry.
1958 - Sea Hunt airs and becomes the driving force in bringing in unprecedented numbers of new divers to the sport. The show stars Lloyd Bridges as Mike Nelson and is produced by veteran producer Ivan Tors. Famous divers including Zale Parry, Lamar Boren, and Al Tillman work in front of or behind the cameras on the show.
1959 - Jacques Cousteau chaired the organization of the Confédération Mondiale des Activités Subaquatiques the first international dive training association made up of Federations from fifteen countries including France, England, Germany and the United States. It has now grown to over 100 countries worldwide.
1959 - Hollywood's love affair with the underwater world bottoms out with Jerry Lewis on scuba gear, some wayward Weeki Wachee mermaids, and a wimpy, wacky octopus in Don't Give Up the Ship.
1959 - The YMCA develops the first national diver certification program.
1959 - The Underwater Society of America was formed.
1960 - Al Tillman (Founder of the Los Angeles County Underwater Unit) and Neal Hess (Columist and Director of the of the National Diving Patrol for Skin Diver Magazine), with help from Garry Howland and John Jones, create the National Association of Underwater Instructors (NAUI) and hold its first instructor certification course in Houston during the Underwater Society of America Convention. Tillman adapts the Los Angeles County course to be taught to individuals from any diving venue and NAUI incorporates as a non-profit agency. NAUI becomes the first international certification agency. Early financing and administrative assistance for the agency came from Skin Diver Magazine.
1960 - Diving pioneer Connie Limbaugh drowns while diving in a cave in France. Limbaugh, the first chief diving officer at Scripps Institute, is among the most admired divers in the world and a leading marine scientist. His death saddens everyone in the industry ­ and makes divers everywhere feel vulnerable.
1960 - Dick Birch opens the four-room Small Hope Bay on Andros Cay in The Bahamas ­ the earliest known dedicated dive resort. Small Hope Bay offers a remote location sheltered by the Andros Barrier Reef, less than 200 miles from Miami. Now with 20 rooms, it is still in business.1960s - Mel Fisher, Burt Webber, Kip Wagner, Fay Feild, and others find scattered treasure from wrecks of Spain's 1715 fleet and create new technology for the hunt. By the end of the decade, they recover much of the salvageable treasure from the 1715 and 1733 fleets. But new finds will continue to be uncovered in the 1990s, and, perhaps, beyond.
1961 - John Gaffney founded the National Association of Skin Diving Schools (NASDS).
1961 - Maurice Fenzy patents a device invented by the underwater research group of the French navy. The device includes an inflatable bag with a small attached cylinder of compressed air. It rapidly becomes the first commercially successful buoyancy compensator. Within a few years, divers throughout Europe, and a few well-traveled Americans, are wearing "Fenzys."
1961 - Ed Replogle invents a "sonic alarm" that automatically warns its user (and everyone else in the vicinity) of low air pressure. The device, manufactured by Sherwood and sold by Healthways, signals that safety remains a major concern in the recreational diving industry.
1962 - Two highly publicized experiments give the world a glimpse of underwater experimentation and research. E. A. Link becomes the "Man in the Sea" with an experimental 24hour dive(on heliox) to 200 feet. And Jacques Cousteau conducts "Conshelf One," with a habitat housing six men breathing oxygen enriched air (nitrox) at 35 feet for seven days.
1963 - Equipment importer and distributor Gustav dalla Valle and his partner, former Navy diver and dive equipment retailer Dick Bonin, start their own diving equipment manufacturing company, Scubapro.
1963 - Art Stanfield and Charlie Jehle (Voit), Dick Bonin (Scubapro), Sam Davison, Sr. (Dacor), John Culley (U. S. Divers), and Randy Stone (Healthways) revive the idea of a national trade association. They form the Diving Equipment Manufacturers Association (DEMA) "to promote, foster and advance the common business interests of the members as manufacturers of diving equipment."
1963 - Flipper, a movie featuring Chuck Connors and Luke Halpin, but starring a tail walking, playfully squeaking bottlenosed dolphin, wins modest box office success. The film, its sequels, and the popular television series that follows will change popular attitudes toward marine mammals ­ and toward the oceans.
1964 - The U. S. Navy launches Sealab I for a different kind of live-aboard diving experience. In the first experiment, four divers stay underwater for 11 days at an average depth of 193 feet.
1965 - Al Tillman develops the UNEXSO Diving Resort at Freeport in The Bahamas. Created with the dawn of the jet age, it soon becomes a major attraction for teaching diving and a magnet for traveling divers. Programmed to protect the environment, the resort promotes hunting with cameras instead of spear guns. UNEXSO becomes the prototype of a complete dedicated dive travel destination.
1965 - U. S. Navy Sealab II team leader Scott Carpenter, living and working in the habitat at a depth of 205 feet, speaks with astronaut Gordon Cooper in a Gemini spacecraft orbiting 200 miles above the surface. No longer will humanity be able to view space, sea, and land as separate entities. Instead, we are learning to view Spaceship Earth as a single system. This is the real dawning of the Age of Aquarius.
1965 - Thunderball, starring Sean Connery, glamorizes and updates the image of scuba with waves of diving extras and starlets galore. Agent 007 saves the world but gives diving retailers fits as customers demand to buy scuba gear "just like James Bond's." The special visual effects win an Academy Award.
1966 - John Cronin and Ralph Ericson found the Professional Association of Diving Instructors (PADI) which revolutionized the way instructional courses are developed and delivered throughout the world. John Cronin, a scuba equipment salesman for U.S. Divers, and Ralph Ericson, an educator and swimming instructor, were concerned about the scuba diving industry. They felt that the current scuba certification agencies were unprofessional, didn’t use state of the art instruction and made it unnecessarily difficult for people to enter the sport. John and Ralph knew there had to be a safer, easy way for people to learn to breathe underwater.
In 1966 they decided it was time to start a scuba training organization. John insisted that the word “professional” be in the name of the company. Ralph wanted an “association of diving instructors.” The acronym PADI was born: Professional Association of Diving Instructors
The goal: Give more people a chance to enjoy the underwater world by offering relevant, instructionally-valid scuba diving training to create confident scuba divers who dive regularly.
Cronin went to a huge National Sporting Goods Association show in New York City. While he was there, he met with Paul Tzimoulis, who later became the editor of Skin Diver Magazine. Paul suggested that PADI put the diver’s picture on the certification card. That was a strategic move that helped PADI’s eventual global recognition.
Cronin and Erikson hired Nick Icorn from U.S. Divers’ engineering team, who worked with Erickson to develop a modular training program for the PADI Open Water Diver course. It started to catch on.
In the late 1970's and early 80's PADI began creating its own integrated, multi-media student and instructor educational materials for each course. This development spawned an incredible growth period for PADI and made it unique from other agencies.
By the late 1980s PADI was the leading scuba diving training organization in the world. With so many new people introduced to the activity, PADI felt a responsibility to teach divers about their interactions with the underwater environment. PADI had worked very hard over the years to keep the scuba diving industry as free from legislation as possible. Cronin knew the organization had a responsibility to protect the marine environment or risk the government doing so. John Cronin said:"We want to feel that our children, their children and generations to come will be able to enjoy the underwater world that has given us so much. There are so many significant problems facing mankind, but as divers, this is truly our cause; if scuba divers do not take an active role in preserving the aquatic realm, who will?"
Out of a true concern for the environment, the Project AWARE Foundation was formed.
PADI Today
In 2003, John Cronin passed away. His friend and PADI co-founder, Ralph Erickson, also passed away three years later. They proudly carried PADI’s torch for many years before they confidently put it in the hands of today’s generation, who continues to introduce the world to scuba diving.
1967 - The Undersea Medical Society (now the Undersea and Hyperbaric Medical Society, UHMS) is founded in Maryland. UHMS and its members will significantly advance knowledge of the medical aspects of diving.
1968 - John J. Gruener and R. Neal Watson dove to 437 feet breathing compressed air.
1970 - Scuba Schools International (SSI) was founded by Bob Clark.
1971 - Peter Hughes opens the first full-service dive business on Roatan at "Anthony's Key Resort," then a 17-room resort hotel catering to the sailing crowd. Hughes' remarkable and rapid success demonstrates to beach resort operators throughout the Caribbean that "underwater treasure" can take many forms.
1971 - Scubapro introduces the Stabilization Jacket, a combination backpack and jacket style buoyancy control device (BCD). The "stab jacket" and its imitators increase diver acceptance of BCDs. Jacket-style BCDs become the industry standard for most uses. ("Horse-collar" BCDs will continue to be popular with cave divers and others who use multi-tank dive rigs.)
1972 - The U. S. Congress passes the Marine Protection, Research and Sanctuaries Act. The Act seeks to extend the kind of protection afforded by national park status to estuaries and coastal waters. It recognizes that marine sanctuaries are "part of our collective riches as a nation" and charges NOAA with managing the program. The first National Marine Sanctuary, designated in 1975, protects the remains of the Civil War ironclad Monitor. Today, the system embraces 13 sites including the three newest: Monterey Bay, California; Stellwagen Banks off the New England coast; and the Hawaiian Islands Humpback Whale National Marine Sanctuary.
1972 - "Captain Don" Stewart of Bonaire starts setting concrete "sea tethers" (now known as mooring buoys) at popular dive sites. The buoys successfully prevent damage to fragile reefs caused by failing and dragging boat anchors. In 1979, to further protect the reefs for and from divers, Bonaire designates its surrounding waters as a marine park. Tom van't Hof, head of the Caribbean Marine Biological Institute (Curaçao), formalizes the mooring buoy program. The reef protection idea gradually (actually, far too gradually) takes hold at other popular dive destinations.
1975 - Hollywood rediscovers the underwater world in a fearsome way with the box office blockbuster, Jaws. Stephen Spielberg's bodacious beast makes a bunch of bucks for novelist Peter Benchley but takes a big bite out of the diving business. Shark-o-phobia chases people out of the water in droves, ending 15 consecutive years of industry growth. Aftershocks echo in 1977 with The Deep and in 1978 and 1983 with Jaws 2 and 3.
1977 - The first DEMA trade show convenes in Miami. The show establishes itself as "neutral ground" where the entire industry can meet. The trade show becomes remarkably successful, and within a few years, DEMA makes itself a potent force for professionalism and unity within the recreational diving industry.
1980 - Divers Alert Network was founded at Duke University as a non-profit organization to promote safe diving.
1981 - Record 2250 foot-dive was made in a Duke Medical Center chamber.
1981 - DEMA designs and tests its GEM program of streamlined diver training in cooperation with NAUI, PADI, and a group of diving retailers. The program suggests a kinder, gentler philosophy of dive instruction ­ along with courses that require less pool and classroom time. The certification programs that follow in GEM's wake make diving more accessible to busy professionals, entire families, and other new participants.
1982 - The Institute of Diving opens the "International Diving Museum" (now the "Museum of Man in the Sea") in Panama City, Florida. The museum's collection will become one of the most comprehensive in the world. It includes the U. S. Navy's Sealab I and the Deep Dive System Mark 1. The museum also houses diving equipment from England, France, Germany, and Japan, as well as a research library of rare books, video tapes, photographs, and films.
1983 - Co-inventors Craig Barshinger and Carl Huggins, and ORCA Industries founder Jim Fulton, introduce The Edge®, the first commercially successful American electronic dive computer, at the DEMA trade show. The device automatically tracks dives and continuously calculates remaining "no decompression" time and depth limits. It helps spark a new era in dive instrumentation.
1984, 1985: American popular culture shows a revived affection for the underwater world. Two movies ­ Splash and Cocoon ­ portray the ocean as a revitalizing, nurturing environment and feature lovingly photographed underwater scenes. Rising sales throughout the recreational diving industry reflect the appeal of the new image.
1985: Mel Fisher's team finds the main body of the 1622 wreck Atocha, along with its fabled $400 million in gold, silver, emeralds, and priceless historic artifacts. The event marks the ultimate fulfillment of the treasure hunter's fantasy. Publicity given Fisher's find (not to mention the lawsuits that follow) helps fuel America's reviving fascination with recreational diving.
1985 - The wreck of the Titanic was found.
1998 - NASDS merged with SSI.
May 2002 - The FBI issued a nationwide alert saying that it has received information about a possible terrorist threat from underwater divers. The threat was serious enough for the agency to contact several scuba shops, seeking information about students and customers.
November 2002 - "Skin Diver" magazine ceased publication.
July 2003 - Tanya Streeter, a world champion free-diver, broke both the men's and women's variable ballast free-diving world records. She descended 400 feet (122 meters) to capture the variable ballast record and become the first person to ever break all four deep free-diving world records.