If you have a tank, mount the regulator to it and turn on the air to pressurize. While hosing or soaking the regulator, press the purge button to wash inside the second stage. If you don't have a tank, be sure the regulator's dust cap ...

OK guys, for the last time — dive knives are tools, not weapons.

In the low visibility of a busy river channel, one diver loses his way and his life.

In a hurry to be the first person on the wreck, an experienced diver makes a rookie mistake that costs him his life.

Bill ran the numbers and decided he could break one of tech diving's cardinal rules of safety. The numbers didn't lie, but they also didn't account for an unplanned emergency.

A series of avoidable mistakes claims the lives of two divers.

A close call drills important safety lessons into the head of one lucky diver. Next time, he'll follow instructions. After reading his story, you will too.

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

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