Hammerheads have been spotted off the coast of Florida — but it's not what you think.

An attempt to install an artificial reef of Easter Island-style sculptures ends in disappointment.

Mako sharks. They might look like skinny great whites, but these lightning-fast sharks are in a league all their own. Here's where to scuba dive with them.

Each year, the Beneath the Sea scuba and dive travel show, held in New Jersey, honors one person as a Legend of the Sea for his or her dedication to ocean conservation. This year's honoree, Jean-Michel Cousteau, couldn't be more deserving.

These freshwater experiences — from Iceland and the Great Lakes to China and the Florida springs — offer an exhilarating change of pace.