OK guys, for the last time — dive knives are tools, not weapons.

It wasn't all that long ago that the only way you could gauge the breathing characteristics of a regulator was to simply breathe on it, and then try to make subjective judgments on its inhalation effort, exhalation resistance, etc. This was ...

How to Read A Breathing Loop

Take a deep breath and dig into the results of Scuba Lab's biggest regulator test ever.

Breathing Simulator Results Regulators Under $300: BREATHING SIMULATOR RESULTS ...