Scientists confirm that orcas and dolphins have lost the ability to return to dry land due to irreversible evolutionary ...

These tiny creatures may be no bigger than your little finger, but scientists plan to start counting them from space. Knowing ...

Deep in the Pacific, humans have tracked a mysterious whale’s call for decades—but no other whale seems to respond. And now, ...

Scientists discovered the 1-foot-long animal while aboard a submersible several miles deep in the Pacific Ocean. Take a look.

From mammoth African elephants to giant whales, let's take a look at the 8 largest mammals that inhabit our planet.

A Proceedings of the Royal Society B study of 5,600 mammals found that two species will never return to dry land.

Nearly a dozen miles off the California coast on a foggy October morning, a crane lifts a boxy yellow robot off the deck of the research vessel Rachel Carson and lowers it into Monterey Bay’s choppy ...

Researchers warn that if this trend continues, entire species could disappear, leading to the collapse of ecosystems. A new ...