The founders of the trail hope that it will help regenerate marine ecosystems and make travelers into stewards of the ocean. Florida’s newest must-see attraction is, quite fittingly, under the sea.

The San Jose Sharks play ice hockey. The Sebastopol Sharks? They play underwater hockey. The sport is a combination of swimming, freediving, snorkeling and, of course, hockey. Because points unfold ...

With about a billion people depending on coral reefs for jobs, food, medicine, and more, it's an understatement to say that they are valuable coastal ecosystems. Coral reefs come in many colors and ...

Corrections & Clarifications: This article and video has been updated to correct the last name of a freediver who uses Clear Lake as a practicing ground for bigger dives. He is Don Rothaus. As I sat ...

Imagine snorkeling over a coral reef and dropping a postcard into a mailbox on the sea floor. It's real, and it's happening in Vanuatu! Off Port Vila's coast, Hideaway Island hosts the world's only ...