Measuring dive time, depth and air supply, it uses a reliable, time-proven algorithm to calculate and display remaining dive time based on established limits for nitrogen tension, oxygen exposure or cylinder pressure.

Our test divers kicked the living hell out of 18 open-heel fins on Cozumel's current-washed reefs. See which fins are still standing when the results are tallied.

What to Look for in a Mask

Are the most expensive regs also the best?

Scuba equipment, like most products we buy, is sold with one or more warranties. A warranty is a promise that someone, usually the manufacturer or the dealer, will stand behind a product if it is defective. Some promises, however, are better than ...

Why fly halfway around the world when you can find feisty great whites just south of the border--and just off California.

When you dive with sea lion pups off California's Santa Barbara Island, you've got to share your toys.

If your dive buddy gets hurt or dies, could you be found liable in a court of law? In a word, yes.

We asked professional fish finders for their tricks. Now the secrets of the masters can be revealed.