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Since you're asking... New divers have relatively poor buoyancy control and poor situational awareness. They get a camera in their hands and then trash the reef, kicking and breaking coral, etc., And new divers have NO IDEA of the carnage and broken coral they leave behind them. A new diver...

It's simple. Both O2 and CO2 drive breathing. But it's more complicated than simple gas tension. pH and pulmonary compliance can also drive breathing. It's not simple.

I had a Suunto Zoop with a user replaceable battery. I had my own compressor, maintained all my own tanks and regs, etc. So I'm pretty good with gear. But my Zoop flooded every time I personally replaced my battery. LOL I now have a Teric and am very happy that don't have flooding risk anymore.

This is also false. You're reading into my words what you want to see.

Are you claiming that I equated the two? If so, prove it.

Yes, they blow off excess CO2 with a faster respiratory rate, and increase their O2 through purse-lip breathing, aka "auto-PEEP."

I've performed emergency intubations of quite a large number of people - literally thousands - who were hyperventilating and plunging into respiratory failure due to hypoxemia (low O2) not hypercapnea (high CO2). Blood gasses showed a reduced pCO2 from hyperventilation, and a pO2 that has NEVER...

Totally false

Not my job. Adults are responsible for their own education.

Totally false.

Totally false.

As others have said, there are many other factors that determine your air consumption. As an anecdote, one of my diving buddies is a Mt. Everest climbing guide. He is shorter than me and weighs less than me, but our air consumption is the same. Our wives consume 40% less air than we do, so we...

To be fair, this was our reality and we don't recommend Buddy. And we don't recommend Bonaire unless you're prepared to deal with crime.

Not recently. Been about 6-7 years. Won't go back to Bonaire or Buddy.

There are always lemons. I bought a top-rated chainsaw from a top-rated company and it's been nothing but trouble. A friend had a Teric for years, never had any trouble with it. I bought it used from her. The battery life if wonderful, no problems at all. I did a liveaboard in Indonesia, lots...

I wouldn't even get tanks from Buddy

Yeah The strategy of some businesses is to drag out the "refund" process for so long that the credit card companies won't help you once you finally file a dispute.

We stayed at Buddy for 10 days. That place was a disaster. The rental truck were barely functioning. The doors barely opened and closed. The seats didn't lock. There were big holes in the floorboard. In the kitchen, that had so few plates a silverware that It was always "stand around and wait"...

I may have one that I can sell you, in a Pelican case

The image quality of a compact cannot compare (yet) to the image quality of a dSLR. For professional photographers the dSLR still reigns king. That being said, as someone who switched from a huge $$$$ dSLR to a $$ compact, the ability to take "memory" images and video is so much easier with a...