An out-of-air situation takes a turn for the worse when buddy-breathing divers make a crucial error in judgment.

At the surface, two divers caught in a current watch helplessly as their unmanned sailboat becomes a speck on the horizon. Learn how you can avoid making their mistakes.

Adhering to predive procedures is crucial when using a closed-circuit rebreather. Without a buddy to catch his mistake, one diver pays the ultimate price for carelessness.

A technical buddy team ignores their training, and one diver pays the price.

Two lobster divers ascend from a dive to find their boat is nowhere in sight.

Two divers follow a divemaster beyond the level of their training. Only one comes back.

Ill-prepared for ocean currents, an out-of-shape diver panics with fatal results.