Divers Alert Network is a 501(c)(3) non-profit medical and research organization dedicated to the safety & health of recreational scuba divers. To become a member call 800-446-2671 or visit diversalertnetwork.org. Mention Priority Code 999RS5.

How to double your safety and practice important skills. Bonus: you waste no time, no air.

Nitrox may benefit some divers on some dives, but is it for you? Get the facts before you make the switch.

Select either A or B, whichever photo you think was taken by a professional photographer, and see if you chose correctly. Plus you'll learn how you can take breath-taking photos like these! ...

The over-under shot is one of underwater photography's most difficult assignments. We make it simple.

We take a close-up view of entry-level camera systems from $190 to $500.

Follow these tips for outstanding photos with today's most popular underwater cameras: the entry-level point-and-shoot.

Twelve former underwater photo students share the secrets of their success.

Sometimes just getting there ready to shoot can be the hardest part.