Wild beavers have been extinct in the U.K. for more than 400 years. Now, they're back in a Dorset nature reserve.

While we haven't quite found any living dinosaurs roaming around (sorry, kids), several presumably extinct creatures have sparked ... are rumored to be home to sea monsters lurking in the depths.

The world under the sea is a whole new one and all the sea creatures are not known to us. Thus, whenever we see news about a new or unique sea creature being discovered, all of us are waiting to ...

Smilodon went extinct only 10,000 years ago ... While it was one of the few sea creatures to have legs, they were stubby ...

Fifteen million years ago, now-extinct species of dolphins, whales and large sea cows roamed the world’s oceans, topping the underwater food chain. Yet back then, any one of these creatures ...

Some creatures have remained unchanged for millions of years, surviving drastic climate shifts and evolution. Meet 10 living ...

In a world where new species are constantly being discovered, some creatures remain hidden in the depths of the ocean, ...

In the last ten years, at least 15 species have officially checked out, never to be seen again. It's ironic to think how ...

The ocean hosts amazing creatures capable of instant color change, expertly using camouflage for survival, communication, and hunting. Explore these remarkable color-changing sea species!

The museum is a 44,000-square-foot facility overlooking a 4-acre fossil-filled former sand quarry in Mantua, Gloucester ...

Octopuses are cephalopods that live in oceans around the world. They are also some of the most intelligent creatures on Earth ...

Sea creatures were spotted off the coast of California. Akira Hojo Unsplash Massive sea creatures were spotted off the coast of California and viewers are calling the experience “dreamy.” ...