Sharks and rays have populated the world's oceans for around 450 million years, but more than a third of the species living today are severely threatened by overfishing and the loss of their habitat.

Watch as this great white shark makes a record-breaking 15-foot jump out of the water. You can hear the shock and awe in one man's voice!

The waters around two remote atolls in the central Pacific Ocean—spanning 18,500 square miles—are now protected from fishing ...

Shortfin makos are the fastest sharks in the sea, but they're failing to outpace the scale of overfishing that is driving ...

Rising mountain peaks and sharp rock formations cover the ocean floor, with corals, sponges, fish, and tons of sea creatures ...

There is a seldom-seen world of mysterious sharks that dwell in the cold, deeper regions of the seas. These secretive ...

The Galapagos Islands are home to many species of shark, including the largest shark, the whale shark. Whale sharks are ...

The Marshall Islands declared on Tuesday its first national marine sanctuary, which protects a 'pristine' expanse of the ...

Certain metallic rocks seem to be making oxygen in the dark, without light or sunshine, at the bottom of the ocean.

A research expedition in the Tonga Trench filmed a Pacific sleeper shark, a slow-moving, opportunistic predator rarely seen ...

Harikleia Mari talks about her experience in the deep blue waters of the Indian Ocean and swimming with sharks and huge ...