Coral-covered underwater walls are some of the coolest dive sites, and are filled with sea creatures big and small. Here are 15 best in the world to go dive!

An insider's guide to 12 great scuba destinations.

Guests at Jean-Michel Cousteau Resort will dive with Coutseau and explore the ocean through the eyes of one of the world’s most renowned environmental heroes

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Who doesn't love Nemo? The star of an animated film about the underwater world has caused anemonefish to be instantly recognizable — even by nondivers.

It's always a thrill to dive with large schools of fish. Check out Judy G's gallery of schooling fish from Mexico, Thailand, Fiji, Costa Rica and Indonesia.

Judy G's macro gallery showcases little gems found in Indonesia, Fiji and other locations; plus, her tips on getting ready for close-up photography.

Many of the world's hottest shark scuba diving spots also offer can't-miss topside thrills to keep your heart rate up between dives.