"One diver, after a seemingly brief period below the surface, discovers that his gas supply has run perilously low. Another, paralyzed, bobs helplessly on the surface, and when a poorly trained divemaster attempts rescue, things go from bad to worse. Two other divers, fascinated by the bountiful undersea life of the Caribbean, fail to notice that a powerful current is sweeping them rapidly away from their unattended boat.These are just a few of the true stories you'll find in Diver Down, most of them involving diver error and resulting in serious injury or death. Each of these tales is accompanied by an in-depth analysis of what went wrong and how you can recognize, avoid, and respond to similar underwater calamities. This unique survival guide explores the gamut of diving situations, including cave and wreck diving, deep-water dives, river and drift diving, decompression sickness, and much more. It shows you how to prevent tragic mishaps through: Inspection and maintenance of primary and secondary diving gearLearning and following established safety protocolsConfirming the training and credentials of diving professionalsPracticing emergency responses under real-world conditions"