This book fills the gap between sport diving texts and the complex medical/commercial texts. Coverd are such topics as physiological and mental preparation for deep diving, stress, nitrogen narcosis, oxygen toxicity, staged decompression, deep diving equipment, self-sufficiency, dive computers, contigency planning, nitrox, mixed gas, dive tables, and decompression sickness and treatment. Included are many first hand accounts of the authors and other top experts such as Dr. Bill Hamilton, Tom Mount, Sheck Exley, Jim Lockwood, Jim Bowden and Dick Rutkowski.