Identified by DNA evidence, the newly named fish increase Australia's known shark and ray species by a third.

The U.S. is likely to grant national-monument status to Pacific island regions that together are larger than Alaska and Texas combined—a "great choice," conservationists say, if the areas are actually protected.

The megalodon's bite had enough force to crush a small car, although its teeth probably wouldn't have been up to such a task, a scientist says.

Unprecedented footage captures a great white shark off the coast of South Africa breaching the water's surface to snare a seal during nocturnal hunting.

The remarkably well-preserved fossil, discovered in the Australian outback, is the earliest known record of vertebrate sex, a new study finds.

Sharks and other creatures in the Coral Sea are vulnerable to human activities and could be wiped out if the area isn't protected, conservationists warn.

What is believed to be a great white shark attacked and killed a 66-year-old man in the first fatal shark attack in California since 2004.

A three-year-old green sea turtle in Texas is likely the first sea turtle to be fitted with a prosthetic flipper.

Sharks follow well-used migration routes to popular feeding spots—areas that could be set aside for conservation, experts announced at a recent meeting.

After 450 million years swimming the ocean, some shark species are on the verge of extinction—mainly due to over-fishing.

An eight-foot catfish, the new seven wonders, and "the inside-out-seahorse-in-a-ball-nerd of the deep" are among our most viewed marvels.

There is such a thing as a free lunch for Hawaii's jack fish and sharks, which follow endangered Hawaiian monk seals as they hunt and then steal their prey.

A "flying" shark, a cheeky monkey, and a Pollock-esque elephant image are among the winners of the 2007 Wildlife Photographer of the Year Contest.

Visitors can snorkel and swim with whale sharks as they make an annual appearance to feed on plankton blooms each September off Mexico. But there's concern the tourists could innocently harm this vulnerable species.

The finding suggests the evolutionary jump from fish fins to animal limbs occurred millions of years earlier than previously thought, scientists say.