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July 2017 Edition


In This Issue:

The Thermodynamics of Scuba

--by Dr Dan Baeza

Scuba divers are amazing people. They need to know meteorology to understand weather patterns and how weather affects the seas. They need to understand how depth and pressure are interrelated. They must understand basic medicine as it relates to barotrauma, and first aid for those unlikely accidents. They must be conversant on the hundreds of plants and and animals that occupy this harsh environment. They need to apply basic navigation skills and techniques. They must be physically capable of handling 60 to 80 pounds of extra weight on a rocking boat. Finally, they need to understand the physics of thermodynamics, the subject of this article.

Even if you don't profess to know much about science, you already know all about thermodynamics, the science of heat transfer. But first a little history. In 1868, Carl Wunderlich published his findings whereby he measured the temperatures of hundreds of healthy individuals over several years, and concluded that the average healthy person's internal or core temperature centered around 37 degrees Celsius. This translates to 98.6 degrees on the Fahrenheit scale, a so-called "normal" temperature. We will use Fahrenheit throughout this article. Normal temperature can vary plus or minus a degree, depending on age and physical activity, but generally, your body functions well when it's core temperature hovers around that average. Your skin temperature is several degrees cooler than your core. It will range from around 87 degrees near your chest and abdomen, to around 84 degrees at your extremities.

Back to thermodynamics. A surface is either a heat source or a heat sink. A heat source gives off heat, while a heat sink absorbs heat. Heat travels from a source to a sink. The transfer of heat from source to sink will continue until both are at the same temperature, a condition known as equilibrium.

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Lower Keys Diving

--by Jerry Kosakowski

Photo courtesy of:

The lower Keys are a little bit of a drive for a one day expedition, but it has much to offer. For us scuba divers the number one attraction is the wreck, the Adolphus Busch Sr. This is a former cargo freighter sunk in 1998. It is 210 feet long and only three dive shops go to it. It is fully intact.

The Looe key Artificial Reef association bought it and towed it from Haiti. It was cleaned up and specially prepared for divers in Miami. Originally named the Ocean Alley, the Anheuser-Busch corporation provided the funding for the undertaking. Since Busch provided funding, they got to pick the name for it. Funny how that works.

It is safe for light penetration and stands upright in 110 feet. It has 12 large holes that make it easy to penetrate and swim through the ship. It is loaded with fish and moray eels, and there are three goliath groupers that frequent the wreck. All this makes for a great dive experience. Place it on your “dives sites to visit” list if you haven’t yet visited it.

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ADA to Tour the Turtle Hospital in Marathon on July 22nd

--by Rachel Davis

The Turtle Hospital is a small non-profit organization dedicated to the rehabilitation of endangered sea turtles. It's goals are: 1) Rescue, rehab, and release sick and injured sea turtles. 2) Educate the public through outreach events and local schools. 3) Conduct and assist with research aiding to sea turtles. 4) Work toward legislation making the beaches and water safe and clean.

The Hospital is built on the grounds of the old Hidden Harbor Mote in Marathon, FL. The motel rooms serve as living quarters for their rehab staff and storage. There are several small pools for patients and The Turtle Hospital is a fully-functioning veterinary hospital with two very large outdoor pools. The most common injuries treated at the turtle hospital are caused by humans. These include boat strikes, fishing line entanglement and fibropapilloma tumors caused by fertilizer runoff.

Sea turtles that are deemed non-releasable by the Florida Fish & Wildlife Conservation Commission (FWC) are permanent residents of The Turtle Hospital. The most common reason for permanent residency is bubble butt syndrome caused by boat strikes. Boat strikes creates an air cavity in the shell which makes the turtle positively buoyant and unable to dive. Thus they cannot forage for food and must live out the rest of their lives at The Turtle Hospital.

ADA is planning a special tour to The Turtle Hospital on Saturday, July 22nd at 9:00 a.m. for those attending the Looe Key/Key West weekend. The tour lasts 90 minutes and will be over in plenty of time to drive 20 miles south to Looe Key Resort and have lunch before the dive check-in. The tour provides a presentation on sea turtles as well as a behind the scenes look at the hospital facilities and rehabilitation area. There are also educational exhibits about turtle conservation and how we can prevent illnesses and injuries to sea turtle populations. At the end of each program guests are invited to feed the permanent residents.

Tour admission is $22 per person, payable directly to The Turtle Hospital upon arrival, which is located 2396 Overseas Highway Marathon, FL 33050, MM 48.5 Call Rachel Davis at 786-316-9852 or email to sign up for the tour. We look forward to seeing you there!

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ADA’s 2017 Coral Restoration Program
--by Roy D. Wasson

Every diver loes colorful coral reefs teeming with marine life.  But if you have been diving in the Florida Keys for less than thirty years, you missed the reefs when they were the most beautiful.  From the late Seventies until the mid Eighties, a combination of factors led to a drastic drop in reef-building corals, leaving the reefs bleached and scattered, nearly facing extinction. Ships running aground over shallow reefs, warming and polluted waters, and the demise of the spiny sea urchin, which helped clean away choking algae, along with other stressors, rendered the reefs much less beautiful for divers and less hospitable for fish and other sea life.  But for more than ten years the Active Divers Association, through the volunteer efforts of members like yourself, has been working to reverse that decimation of the reefs and to restore them to their former health and beauty.  This is your chance to do your part in our next restoration project on September 9.

Since 2007 the ADA has been supporting and participating in the reef restoration activities of the Coral Restoration Foundation (“CRF”), a not-for-profit research and conservation organization led by Ken Nedimyer.  CRF works to restore our coral reefs, educate others on the importance of our oceans, and uses science to further research and monitoring techniques. CRF is a world leader in the marine sciences dedicated to creating offshore nurseries and restoration programs for threatened coral species. These programs have allowed CRF to take the lead in innovative nursery and restoration techniques that are implemented worldwide.

Through propagation techniques, tens of thousands of corals are grown and maintained in multiple offshore coral tree nurseries before being strategically outplanted on reefs allowing them to continue on a path to natural recovery. With the help of students, volunteers, scientists, and donors, baby corals are successfully raised until they are “reef-ready”, outplanted onto the reef, and monitored. These innovative techniques are being duplicated in other oceans and making a difference for reef systems worldwide.

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Dive Etiquette

--by Mo Smith

Boat charters survive by maximizing the number of divers on each dive trip.  Frequently, charter boat real estate is minimal and divers have to strategically utilize their gear space.  These are some tips that can help a diver navigate through a dive trip by using proper etiquette resulting in a successful day on the water.

  • Arrive on Time – Typically a diver should arrive 30 to 60 minutes prior to the boat departure time, to minimize departure delays. During this time, the diver should complete any necessary paperwork and gather all gear required for the dive trip. With sufficient time to prepare, diver anxiety is diminished.

  • Organize Your Boat Space – Minimize space used by organizing your gear.  I like to secure my gear within my BC.  After setting up my gear, my fins are placed vertically inside the chest cavity area of my BC, my mask is clipped onto the chest strap, and my weights and dive bag are placed on the floor just underneath my seat.  This protects my gear from damage and allows space to my next-door neighbors.

  • Secure your Tank – Most charters have some way to secure your dive tank after you’ve set up your gear.  Make sure you secure the gear in the dive operator’s prescribed manner to prevent it from falling over during travel.  This will prevent damage or injuries.

  • Listen to the Dive Briefing - Each Charter has a unique way of handling their divers and provide specific information regarding emergencies, entering/exiting the dive boat, length of dive time, and other important information.  Even if you have heard the briefing before, it is not appropriate to continue to speak while the other divers are trying to listen.

  • Use the Correct Rinse Bin – Dive boats usually have two water filled bins.  One bin is used for cameras, and the other for mask rinsing.  It is inappropriate to place your mask in the camera bin.  The chemicals in the defog used on your mask can harm delicate camera parts.

  • Be a Helpful Neighbor – If a neighbor needs assistance, be helpful if appropriate, or contact the boat Dive Master.

  • When Diving be Aware of your surroundings – Don’t separate from your dive buddy, be cognizant of the reef, and prevent damage.  On occasion look back, if you see a cloud of sand you are the one creating that plume with your fins, so adjust your buoyancy or fin kick.  This damages the environment and prevents divers behind you from enjoying the dive area.  Don’t touch, don’t stand, and don’t take are good rules to follow.

  • Return on Time – Dive charters are on a schedule and the longer you take in returning to the boat from the dive, the shorter the second dive will be. All the divers, not just you, have paid to dive.  Your late return diminishes their dive time.

  • Be Polite – When using the boat shower be aware of the other divers in the immediate area.  Shower downwind and prevent spraying them with water, possibly causing damage to uncovered cameras, or wetting dry clothes or dive logs.

Following these simple rules will make you a better dive neighbor and fulfill what will be an enjoyable day in the water.

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Dive Rite Manufacturers

--by  Lenora Bach

If you have never heard of Dive Rite Scuba, you are not alone.  I learned about this amazing company just a few months ago. Rainbow Reef Dive Center in Key Largo carries a  nice display of equipment.Dive Rite was established in Florida around 1984 by Lamar Hires and Mark Leonard.  They are two underwater cave explorers from North Florida.  If you go to the Devil’s Den, Blue Grotto or Jenny Springs you see their equipment and logo everywhere.

In the early 1970’s and 80’s, technical dive gear was virtually non-existent.  Most cave divers make their own gear or adapted it from ocean gear. Even Lee Wood remembers shimming down a rope to get into Devil’s Den.

Lamar Hires and Mark Leonard changed that by introducing the first scuba products for underwater exploration.  They hold many patents on scuba inventions. They were the first to manufacturer a user programmable Nitrox computer called “The Bridge” in 1991.  By 1996 Dive Rite launched the TransPac harness shown at right:

The TransPac harness was developed to carry double tanks where you could swim, climb and walk through tight caves.

An exploration to the Rysendo caves in Japan required not only diving, but also dry caving and climbing out of “sumps”.  You can watch a DV tape from 1998 during a Japan Cavers Club expedition at

Dive Rite also has equipment for the sport diver, such as the Advanced  Open Water regulator. The core philosophy behind Dive Rite products is “Dive Streamlined”. The Advanced Open Water Regulator is a perfect example of that and comes highly recommended by Dive Instructors at Rainbow Reef Dive Center. Visit for more product information.

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Out of Air?
--by Jerry Kosakowski

Impossible, who could be so stupid? Well, sometimes it just happens. Here: I was shore diving and swimming back in. I noted my air was low but I was in shallow water and could easily surface. So instead of the “on your back” hard swim, I decided to just intentionally run out of air. The water was calm and I was near shore. In addition to your gauge, your regulator gives you a warning. It becomes very hard to breathe as the air gets real low. I kept underwater until about 100 psi, when it became way too hard to breathe. I would not do this in rough water, because you could get knocked down and have to grab that regulator.

But what about other situations? Well, we know the deeper you dives the closer you should be monitoring that air gauge. Popping up at a shallow depth is no problem, but running out at depth is a problem. You had better be very close to your buddy. In fact, the deeper you dive the closer you should be. Panic is the last thing you need in a bad situation. But should an out-of-air situation happen, signal your buddy and use his octopus. Then ascend slowly and make that safety stop if you have enough air. It would be wise to practice this occasionally as well. Knowing you can accomplish this feat makes it easier if you are forced into that bad situation.

Now, if you are not deep and your buddy is not close by, you should have enough air in your lungs to reach the surface even after exhaling. Simulate an out-of-air situation. Being ready for the emergency and acting with confidence sure beats having to think about what to do under pressure. But be sure to keep your regulator in your mouth and exhale the entire time. Once on the surface, get your buoyancy established and remain calm. You just saved yourself.

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How We Decide If Weather Conditions Are Suitable For ADA Dives By Boat

--by Lon Von Lintel

The ADA Safety Officer assigned to a given dive makes the call. He/she uses many different resources, including: 1. The NOAA National Data Buoy Center, which divides S. Florida into areas from Jupiter inlet to Ocean Reef and from Ocean Reef to the Dry Tortugas. In either area there are numerous reporting stations that record sea conditions, wind direction and velocity, water temp. etc for the past 10-12 hours. The Center also forecasts conditions for the next 3-5 days for each zone.

2. Accuweather, provides weather radar loops that display rain and associated conditions for the past 1 hour +. There are 4 radar stations that display images- Miami, Tampa, Melbourne, and Key West. Each provides a slightly different perspective.

3. Rainbow Reef Dive Center weather reports. This info is sent to their web site as observed by the boat captains at each dive site. Wave height, wind direction and velocity, water temp, u/w visibility and pictures are posted. These reports are usually posted 1-2 hours after each captain arrives at the dive site.


Congratulations Advanced Open Water and Enriched Air Divers!
--by Rachel Davis, Master Scuba Diver Trainer

From L to R: Tonina Stango, Samantha Swan, Instructor Rachel Davis, Amber Vazquez, Braulio Aparicio, and Becky Valencia.

On Saturday, June 17th, five ADA members earned their PADI Advanced Open Water and Nitrox certifications. They are Braulio Aparicio, Becky Valencia, Amber Vasquez, Tonina Stango and Samantha Swan. The group studied Peak Performance Buoyancy and Underwater Navigation at the ADA season kick-off picnic on a shore dive on April 8th, Fish Identification on the ADA dive in Islamorada on June 10th, and Deep and Wreck diving while using Nitrox on the Miami Wrecks ADA dive on June 17th.

Congratulations Advanced Open Water and Enriched Air Divers!

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Congratulations Rescue Divers

--by Lenora Bach

From L to R: Juliana Bach, RRDC Instructor Bronwyn Denard, and Joshua Escalona

Congratulations to ADA teen divers, Juliana Bach and Joshua Escalona and for completing their PADI Rescue Diver course on June 11, 2017. They attended Rainbow Reef Dive Center for the 3 day course and 4 open water dives.

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ADA T-Shirts For Sale

Show your pride in the best dive club anywhere! Sizes small, medium, large, xlarge, xxlarge. Some tank tops available also. All shirts are $10 each. CALL LON AT 305-251-4975 AND PLACE YOUR ORDER TODAY!. Lon will deliver it to you on your next dive

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Have You Moved or Changed Email Addresses Lately?

If so, please email or call us with your current information. You may send an email to: Dr. Dan Baeza, Membership Chair at You can also call Dan at 954-260-8225 and leave a message with your new contact information.

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Newsletter Delivery Options

Want your newsletter delivered via snail-mail? Contact the webmaster and request a printed copy. Be sure to put "ADA Newsletter" in the subject.

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Scuba Funnies

How to avoid a shark attack:

Always dive with a buddy. When a shark approaches, point to your buddy.

ADA Guidelines and Policies


  1. Be current (dive activity within the previous 3 months).
  2. Have the approval of an ADA Safety Officer.
  3. Have a minimum of 25 logged dives.
  4. Carry an alternate air source (octopus), time keeping device and depth gauge


Before departing for the dive site, confirm weather conditions with Lon at (305) 251-4975 or with the designated Safety Officer. It is the responsibility of the member to call. Because of the large numbers of divers involved we are not able call you with weather information. For morning dives, call between 6 and 10 p.m. the night before the dive. For afternoon dives, call between 9 and 10 a.m. the morning of the dive


  1. Check this newsletter or the annual calendar for upcoming dives.
  2. Call Lon at (305) 251-4975 or via email at to make a reservation. If via email, you will receive a notification whether space is available. Please do not leave requests on his answering machine, the trip may be full.
  3. We will hold your reservation for four (4) days from the date you call. If we do not receive payment within four days, your space may be given to other members. If you wish to confirm receipt, call Lon.
  4. Ask for details about the trip when you call. Otherwise, details will be given when you call for a weather check. (See “Important Weather Information”)
  5. Make your check payable to ACTIVE DIVERS ASSOCIATION, not to any individual, and mail to:
Jerry Kosakowski 
298 NW 83 Lane 
Coral Springs FL 33071-7439
You may also pay online via PayPal on the "Dive Schedule" page.


  1. Members using dive computers may extend their time 10 underwater minutes beyond the time allowed by the tables.
  2. Computer assisted dives must be well within the NO DECOMPRESSION LIMITS
  3. Members should understand and follow the manufacturer’s recommendations.
  4. If a computer diver is buddyed with a diver using the tables, both must follow the tables.
  5. If a buddy-team is using dis-similar computers, both must follow the more conservative readings


ADA has created a unique concept in local diving: NO FAULT INSURANCE!! For an additional $5.00, per person, per local dive trip, members can eliminate the worry of losing their dive fees because of an unforeseen change of plans. If for any reason you are unable to attend a local dive for which you are scheduled and have paid the insurance, ADA will credit your dive fee to another date. The $5.00 insurance is  non-transferable and non-refundable. When you make a reservation, ask for dive trip cancellation insurance.


All members are reminded to read the “Rules & Guidelines for Diving Activities” you received with your membership package. Number 16 states, “All divers must be present for the pre-dive briefing”. If the diver is not present for the entire briefing, diving privileges may be revoked for that dive. Please plan to arrive on time - or better yet - a bit early. We thank you and appreciate your cooperation.


Because of our contractual agreements with our service agents - dive shops and boat captains, we must notify them - usually seven days in advance - of the final number of spaces we are paying for. Thus, if our members cancel less than seven days in advance, we regret that NO REFUND OR CREDIT can be given, unless trip cancellation insurance has been purchased at the time of the dive trip payment (see next news article!)

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