The three essential skills every diver must have, and 16 tips for a lifetime of better diving.

How to keep your local chiropractor off your back.

The boat looks generally battered and unpainted. A captain might be careless about the cosmetic appearance of his boat, but fastidious about maintaining his pumps and filters.

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.

Basic scuba diving rules and regulations to stay safe underwater, from your safety stop to diving ascent rate.

How long will a tank last you at a given depth? Here's how to find out.

What to do when the water turns from gin-clear to Bloody Mary.