Plus: The dizzying after-effects of a live-aboard trip and how to treat marine stings.

Scuba Lab reviews 10 of the newest masks.

Scuba Lab puts 23 models on a state-of-the-art breathing machine and in the water with a team of test divers to find the cream of a new crop.

Visionaries predict a time when your mask will tell you how much air you have left and nanobots will gobble nitrogen from your bloodstream. Get ready for a brave new world.

Hurricane Wilma roared across Cozumel last fall, but the island has made a stunning recovery. And under water, its reefs, caves and high-speed drift dives are better than ever.

Scuba's best-kept secret? Divers have been yapping about it for years.

Only in South Florida can you cram as many as five shipwrecks and artificial reefs into a single dive.

A sampler of So Cal beach dives, where the crowds and cars end at the waterline.

Dive the U-352, try a shrimpburger, learn to spearfish, and more.