Monday, January 24, 2011 4:08:05 AM
@jamie76 "it has nothing to do with how deep he is or how long he was down. you cannot get the bends if you descend holding your breath."
This is a common misconception. You can get a bend from breath hold as it demonstrated by examination of whale bones. Look it up.
I am a very experienced scuba diver (>500 dives in cold Irish waters).
The bends are caused by gases saturating into your body due to the pressure of the water. If you ascent rapidly these gases expand. It makes no difference if the air was from a compressed tank sinice the reg delivers at ambient pressure. Breath hold is the same as scuba just for shorter duration and shallower depth (usually).