New fossil evidence suggests echidnas evolved from a water-dwelling ancestor, not a land-based one. The bone structure ...

In the waters off New England, one of Earth's rarest mammals swims slowly, mouth agape. The North Atlantic right whale ...

Alligators can live on land and in water, but that doesn't mean they can breathe underwater like fish. But how long can alligators stay underwater? And how long can they hold their breath? Let’s find ...

A 31-foot sperm whale at risk of death washed up on Hilton Head Island on Saturday evening, drawing a crowd of onlookers to ...

A sperm whale beached in Beaufort County, SC over the weekend was euthanized by officials overnight Sunday. Crews worked May ...

One by one, the four California sea lions slid out of their crates and into the ocean. As the SeaWorld San Diego rescue boat ...

This year’s toxic algal bloom off the coast is the longest and deadliest ever seen in Southern California. Will sea lion and ...

Since late February, more than 800 poisoned animals have been reported in just Los Angeles and Orange counties.

Analysis of the fossil suggests that the only two egg-laying mammals, platypuses and land-based echidnas, both descended from ...

Nearly a month after a federal and state raid, large protest, public and official outcry, Gulf World park is still open amid a "chaotic" bankruptcy.

A new study suggests the platypus and echidna — the only egg-laying mammals — had a water-dwelling ancestor. The finding ...