PD13: Hyperbaric science and tech diving w/ Dr. Vann of DAN

Published: Oct. 15, 2005, 11:41 p.m.

Dr. Richard Vann of Divers Alert Network discusses hyperbaric science and tech diving. Reviews the freediving documentary, "CAYMAN 2005. Diver Down" Interview with Martian Stepanek, world champ freediver.