Video shows hundreds of manatees flocking to Three Sisters Springs in Crystal River Florida — it's a beautiful sight!

Whether shooting macro, wide-angle or compact, see the best dive sites for photographers!

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!

Where can you dive wish sharks? What about dolphins and sea lions? Here are the best destinations in the world for big-animal encounters, voted by you!

See what happens when this manta ray "asks" scuba divers for help! Just another reason to keep debris and pollution out of our seas.

Want to find the best dive shop in the Caribbean? Or the best dive resorts around the world? We asked readers to rank their favorites — and the results are in!

The world's best wreck diving, chosen by you! Presenting our readers choice awards for best wreck diving in the world — and some beautiful underwater images.

The world's best diving, chosen by you! From the Caribbean and Atlantic to North America to the Pacific and Indian Oceans, here are the top-rated dive sites.

The world's best diving, chosen by you! From the Caribbean and Atlantic to North America to the Pacific and Indian Oceans, here are the top-rated dive sites.