Saturday, December 31, 2016

Whiteboard Lesson: "Partial Pressures"

#scuba #scubadiving #nitrox #eannitrox #partialpressure #daltonslaw #jcaelitescuba #whiteboardlesson

Whiteboard Lesson: "Partial Pressures"

Understanding partial pressures are important to the scuba diver...

Dalton's Law states that, "the total pressure exerted is equal to the sum of the partial pressures of the individual gases."

Two considerations of an increase of partial pressures when breathing compressed gas at depth underwater is oxygen toxicity and nitrogen narcosis.

As the partial pressure of oxygen increases and we approach the maximum recreational limit of 1.4 atmospheres, we risk the possibility of seizures occuring underwater. Luckily, most divers won't be diving close to 200ft anytime soon so that risk is very minimal.

However, nitrogen narcosis, a feeling of intoxication, which can lead to poor decision making among other things, can occur at a partial pressure of as little as 4 atmospheres when breathing air. Since nitrogen composes about 78% of the air we breath, narcosis management is a necessary factor to consider.

One way to manage narcosis is to learn to dive on and use "Nitrox."

Using nitrox has other benefits that can help a diver dive deeper, have longer bottom times, and even manage nitrogen absorption.

Learn more about all of these things when you take your nitrox course with JCA Elite Scuba. Give me a call so we can start your class today...


JCA Elite Scuba

Open Water Scuba Diving Presentation: Tanks and Proper Weighting (part 1)

#scuba #scubadiving #learntodive #tanksandweight #youtube #jcaelitescuba

Please visit my YouTube Channel for new videos each week:


Deciding which size cylinder to use to match your diving goals or needs can be daunting. Getting a tank with a larger volume can mean longer dives but it could also mean having a greater reserve to count on. When i first started diving i was a TOTAL air hog. Not only did i go through air like it was going out style but it seemed like everyone was getting to do really long dives. When i bought my first really large cylinder i thought i was being really smart. I'll never run out of air NOW but when i had to carry that DAMN thing around i really started to wonder what was i thinking. I got sucked into buying a low pressure cylinder first thinking that i could get more air out of it by just over-filling it.

I now i know you're not suppose to do that but those were the early days and i really thought it wasn't a big deal. As time went by i was able to relax a little and my air consumption went down. What was really happening was that i was just WAY to impatient and always going to fast. It seemed a little weird at first telling myself to go slower because the only thing i wanted to do was get into the water like it was yesterday. I remember hearing people talking about air consumption but i really didn't know there was anything you could do about it. As time went by and i learned to slow down and relax i was able to cut my air consumption down by half if not more.

Monday, December 26, 2016

Tanks and Proper Weighting: Things to consider...

#scuba #scubadiving #scubacylinders #scubatanks #properweighting #buoyancy
Have you had difficulties when you go diving trying to figure out how much weight to use? There's a lot more to it than just throwing enough weight on yourself until you start sinking. If you've wondered about tanks and proper weighting, please like and subsribe to my YouTube Channel and you'll be the first to learn all about it.

Sunday, December 25, 2016

Open Water Scuba Diving Presentation: Deep Diving and Going Deeper

#scuba #deepdiving #jcaelitescuba How deep can YOU dive? Yes, you personally? Some of the answers I've gotten are, "I won't go deeper than 30 feet." "I'm not going deep!" So... What is deep? Depth, as we'll see when we talk about dive planning and gas management, is the factor that determines if a particular dive is possible, practical, or even advised.

Saturday, December 24, 2016

Open Water Scuba Diving Presentation: What is SCUBA? What does Scuba mean?

SCUBA is not just: (S)elf (C)ontained (U)nderwater (B)reathing (A)pperatus Understanding what this system does is not often taught in a text book. The student and I only have this short time together and the better the message becomes a part of their understanding, the better diver they WILL become.

The Introduction to my Open Water Scuba Diving Presentation

Thursday, December 1, 2016

Learn to dive in cold water... Drysuit diving experiences... Dive in the Puget Sound


Dive with a Giant Pacific Octopus

Pacific Northwest Dive Excursions

The BEST scuba diving in the world... Everyone can do it, even kids.

Stated to be the best diving in the world by Jacques Cousteau, diving in the Pacific Northwest (PNW) can rival and surpass most tropical destinations. One of the greatest destinations within this area is the Puget Sound. The sound boasts an amazing 1,332 miles of coastline topped only by the incredible diversity of life.

There is boat and shore diving, as well as shallow dives for beginners, deep dives for the intermediate and advanced, as well as and technical dives that can challenge even the most adventurous. You'll see: Fish , Sharks, Skates, Rays, Cephalopods, Crustaceans, Shellfish, Echinoderms, miscellaneous Invertebrates, Marine Plants, Marine Mammals, as well as an incredible array of land animal and birds. Of all the animals, the Giant Pacific Octopus lives here! She is my favorite! I can take you to some of my favorite dive sites to see one! ...and did I mention that they can grow to fourteen feet long?


Even if you're aren't interested in the animal life, there is an abundance of wrecks, natural and artificial reef systems, and an amazing amount of junk that is always fun to come across and discover.

The PNW is also famously known for it's lakes which also boast some amazing diving opportunities. For those that might be brave enough to dive in the very coldest waters, Oregon is home to several "clear lakes." Averaging at between 35 and 43 degrees, and with unlimited visibility, it's diving that you cannot afford to miss!


Keywords: Puget Sound, Washington, Oregon, PNW diving, cold water diving, scuba diving, drysuit diving, Fort Lauderdale, Tavernier, St Petersburg, Lantana, Marathon, Kissimmee, Miami Beach, Orlando, Key Largo, Palm Beach, Florida

Sunday, September 18, 2016

Learn to scuba dive in the PNW. Let me show you how. You know you've always wanted to do it...

Private Scuba Diving Lessons

Scuba Certification and Refresher Courses

CPR & First Aid Training

Portland and Vancouver

JCA Elite Scuba provides the best scuba diving lessons, certification, Basic Life Support: CPR & First Aid training in Oregon and Washington. Your scuba diving certification will be taught on your schedule, where you can take as long as you want with individualized and personal attention. I come to you for classes AND on your schedule... Finish your training in a few days or a few weeks. There is never a rush to have to keep up with others or at their pace. Learning modes include textbook, online learning, e-Book, DVD, and every student will receive direct facilitation from a NAUI, DAN, and TDI Instructor.
Has it been a while since you've been diving? Need a refresher course?  Refresher courses can be conducted in the pool and/or on a dive. Content includes: equipment setup/breakdown, dive planning, skills review, skills evaluation, and more. Please click HERE to see the refresher course outline.
Every student always get more than just the basics because I believe in "Dive Safety Through Education" and building confidence through competence. I want you to become a great diver and have experiences that will last you a lifetime! In a hurry? Expedited services available.

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JCA Elite Scuba.
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Monday, August 8, 2016

Search & Recovery... How it's done on a real job... The process, procedures, progress, and reality of trying to find something in zero visibility.

I was contacted yesterday by a father to look for a GoPro that his son lost in Lake Oswego about a week ago. Lake Oswego is a private lake in the city of Lake Oswego. It is a man-made lake and has areas for boating, family gatherings, and other water activities.

By Esprqii - Own work, Public Domain,

The young man was playing in one the community swimming areas and the GoPro came off of the harness he was wearing.

I make it a policy to totally inform the customer what to expect with this kind of search and recovery job. $100 is collected in advance, and $100 is collected upon arrival. The reason I set the price high is that doing a dive like this has risk, potential for injury, possible entanglement hazards, the occasional overhead environment (in this case, the boat dock), loss or damage of my dive equipment, and gas cost (air fills). Each party (me and the paying customer) agrees that they will wait on the dock until I am totally out of the water. Our agreement includes how long I will look for (I only will dive on 1 tank, leaving a reserve), there is no guarantee that I will find the item, and that there are no refunds of any kind for any reason.

The job begins by arriving at the location and having the customer take me to the site in which the item was lost. They tell me where they think the item went down and any other information about the area that could help in finding it. All my gear is brought down to the water and assembled. I have been in Lake Oswego before and the visibility is 6 inches, or none. Today, the water temperature was warm enough for a wetsuit, but I always wear a drysuit. The other equipment I bring with me is two dive lights, scissors (cutting tool), hood, line on a finger spool, lift bag, and dry gloves.

The customers wait on the dock while I am doing the search and recovery. The bottom of this area is basically silty and even before kicking up anything from the bottom, there is only a foot of visibility, if that. I have to descend slowly as to keep from kicking up the bottom, but since the silt is mud, it is inevitable since I will be crawling on the bottom. I use my dive light to look directly in front of myself and navigate in the appropriate search pattern for the topography of the bottom. The compass is necessary as it is easy to swim out of the swim area as well as getting lost or disoriented. I try to position myself about 6 inches off the bottom. There are pylons that support the dock, but they are impossible to see until you are in direct contact with them. Going under the dock can be dangerous as there are boats that are moored on the other side of the swimming area.

If there was visibility, using line could be helpful, but in this case, line would only create an entanglement hazard and be very dangerous. There are other things that I will occasionally come across, but I don't pick them up until I am ready to exit the water. Picking them up would add the siltiness and anything that is buried in any amount of the mud will pull up a large portion of the bottom. I can't emphasize how important it is to not create entanglement hazards using line.

I try to use the customer on the dock to assist in navigating by banging on the ladder that goes into the swimming area, but the bubbles from each exhalation make it almost impossible to differentiate any noise. By the time I reach 500psi, it's time to start wrapping up my searching efforts and anything I find on this last round will be brought to the surface. This time, I found a plastic chair, a shoe, several toy squirt guns, a boat paddle, children's toy fins, and several pieces of garbage. Exiting the water requires a climb up a vertical ladder. Climbing a vertical ladder with 50lbs of gear is very difficult and without aid, might mean I have to get out of my wing and harness. Most classic harnesses are difficult if not impossible to get out of in the water. I could cut myself out of it, worst case scenario. If I did, there would be no way to get my gear out of the water as there is a drop from the boat dock to the top of the water. 

The search realistically became an exercise of luck, hoping to come across the camera by chance, hence, why it is necessary to always let the customer know that there is no guarantee of finding the item and always getting paid in advance. Search and recovery in limited visibility is difficult while in no visibility is precarious. There aren't any intake valves in the area, but there are ropes and cables that were used to secure the dock. Anyone who is uncomfortable in zero visibility would be wise to avoid this kind of environment, not to mention anyone that isn't familiar with cutting themselves free while not being able to see what you are cutting.

The job comes to an end as I disassemble my gear and load it back in the truck. Search and recovery for fun is a great skill to have, but as with all diving specialties, be sure to weigh the cost of the job to your skills, comfort, safety, and time. I've known people to offer their services for as little as $50. With all that is required in a dive site like this, I would never do it at that price. If you ever have the opportunity to do a search and recovery job, remember some of the things I've mentioned here and have fun.

Thursday, March 24, 2016

Do you live in The Dalles and the nearest dive shop is too far? Well, I am a private independent scuba diving instructor and I'll come to you...!!!

Watch a video about NAUI and The Definition of Diving

Scuba Diving Lessons

The Dalles, Oregon

Do you live in The Dalles and want to learn how to scuba dive?


I am a private and independent NAUI Scuba Diving Instructor. While I live in Portland, I want to certify divers. I will come to you for the education. If you have access to a pool, we can do all the pool work there, too. If not, you can come to me. Want to do all your water work in the Puget Sound? We can do that. It's the way it used to be done.
Check out my main website homepage for all the information you will need to get your classes started. Because I'm independent, I don't own a dive shop and there is no pressure to buy equipment. You only need a mask and snorkel. Everything else can be rented.


Tuesday, March 22, 2016

Scuba Diving Lessons Portland, Oregon

Have you been thinking about learning how to scuba dive? Are you traveling to an exotic destination and want to dive? I am an independent and private NAUI Scuba Diving Instructor.

All my classes are taught on your schedule where you pick the day and time. I come to you for education. Finish in a few days or a few weeks. I will work around your hectic schedule.

I offer specialty courses and rankings through Divemaster. Earn your NAUI Advanced Open Water or Master Diver certifications.

If you've been thinking about technical diving courses, I also teach TDI's Advanced Nitrox and Decompression Procedures. Dive deeper and longer.

DAN (Divers Alert Network) BLS/CPR & First Aid; Oxygen Administration; Neurological Assessment; Hazardous Marine Life Injuries; Diving Emergency Medical Practitioner.

If you want to be the best diver that you can be, that requires the best training. Don't settle for being just another student in a crowded class. No sales pressure to buy equipment because I don't sell any. Private 10ft deep warm water pool. Refresher courses.

All 5-Star Reviews. Fully Licensed and Insured

Welcome to my community.

#scuba #NAUI #ScubaDivingLessons #LearnToDive #ScubaInstructor #LearnToScubaDive #TDI #DAN #Portland #PDX #Vancouver #Oregon #Washington #TechDiving #AdvancedNitrox #DecompressionProcedures #BucketList #Diving #CPR #FirstAid #Community #SummerCamp #BoyScouts #BoysClub #Travel #DiveVacation #DreamVacation #Hawaii #Mexico #Fiji #Bali #ScubaRefresher #NightDiving #DeepDiving #Nitrox #DrysuitLessons #NavigationCourse #PugetSound #Hoodsport #Ocean #PleaseTellAFriend

Thursday, February 11, 2016

Scuba Diving Lesson Near Me, well, you...

Do you want to learn how to scuba dive? I am a private NAUI Scuba Diving Instructor. I come to you for all educational components of your training.

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Scuba Diving Lesson Near Me

...well, near you
Check out my main website to learn a little about my programs, what you get, and how scuba diving will change your life forever.

Snorkeling lessons also available...


Sunday, January 24, 2016

Private Scuba Diving Lesson, West Linn, West Linn Oregon, Learn to Scuba Dive on your Schedule.

Finish your classes in a few days or a few weeks...

My programs include the class, pool, certification dives, and certification card! No hidden fees or hidden charges. In a hurry? Expedited services available.

Learning a private setting means you get all my attention and you don't get lost in a large class size. Scuba is serious business! Let me take the mystery out of it and help break down many of the myths.  
I offer great rates with detailed, thorough, and extensive education in private classes on your schedule. You'll get trained by an instructor that has a diverse knowledge base encompassing recreational, professional, and technical diving experiences. By combining the best of each, the new diver gets an education that builds confidence through competence. NAUI is known World-Wide for having the most comprehensive diving AND educational programs! Don't settle for less -- Get More -- Be the BEST...

Thursday, January 14, 2016

Scuba diving lessons for kids. Kids can learn to scuba dive, too. Portland, Oregon. Diving in the Puget Sound with kids.

Scuba Diving Lessons for Kids

 Kids can learn to scuba dive, too...

Kids do very well scuba diving. They haven't learned the bad habits mom and dad have. Sometimes they even do better...!!! So, next time you go to Mexico, Hawaii, the Bahamas, or Florida, consider taking the kids scuba diving... and if you think that it's too cold or too difficult to learn to dive in the Pacific Northwest, check out Keeley in these two videos.


Keeley, Carlos, and Morgan
Keeley, Carlos, and Morgan

Morgan in cold water gear ready to dive in the Puget Sound
Morgan in cold water gear ready to dive in the Puget Sound

Morgan and Keeley in the Pool
Morgan and Keeley in the Pool

Morgan and her dad sporting some cool t-shirts
Morgan and her dad sporting some cool t-shirts

Joel and his dad after a drysuit dive in the Puget Sound
Joel and his dad after a drysuit dive in the Puget Sound

Kelly and Tylin diving in Greece
Kelly and Tylin diving in Greece

Thursday, January 7, 2016

2-Tank Dive Boat Trips on the Puget Sound with Ocean Quest Dive Charters (1-31-16 and 3-26-16)


available spots are being gobbled up... 

2 tank, One Day, Dive Boat Trip on the Puget Sound
Sunday, January 31, 2016
...for more information, please visit: reserve a spot (no reservations -- first come, first served), please visit:
departs from Tacoma, Washington (Delin Docks)
8 divers maximum
4 minimum to make it a go
$90 for 2 dives
lunch included

2 tank, One Day, Dive Boat Trip on the Puget Sound
Saturday, March 26, 2016
...for more information, please visit: reserve a spot (no reservations -- first come, first served), please visit:
departs from Tacoma, Washington (Delin Docks)
8 divers maximum
4 minimum to make it a go
$90 for 2 dives
lunch included

(please visit our Upcoming Events Calendar for more trips or Contact Us for private excursions)

NEW VS. USED SCUBA EQUIPMENT; Which should you buy?

NEW VS. USED SCUBA EQUIPMENT Which should you buy? How much is a 10 year old piece of scuba equipment worth today on eBay? Take the r...