The fastest animals in the world fly, swim, and run on land. Most of them are birds you probably have never seen before, especially the Frigate Birds that can stay up in the sky for a week.Here are ...

The rare sighting of an octopus riding on top of a shark was shared by scientists with the University of Auckland after it ...

It's commonly thought that sperm "race" to the egg, with the winner fertilizing it. But is this really the case?

"They're really hard to see." Researchers baffled by rare animal behavior spotted along popular coast: 'Super unusual' first ...

Researchers in New Zealand captured the odd pairing on video, but they still don’t know how to explain the behavior ...

When groups make decisions—whether it's humans aligning on a shared idea, robots coordinating tasks, or fish deciding where ...

Colombian marine biologist Fernando Trujillo has spent a lifetime working with the endangered creatures, which offer a window ...

A shortfin mako shark, the fastest-swimming shark in the world, was caught on camera with an octopus catching a ride on its back off the coast of New Zealand.

The aurora borealis has jumped to the top of many travelers' wish lists, creating a tourism boom in the northernmost reaches ...

Scientists aren't sure exactly why the events are increasing, but say it's likely attributed to a variety of factors.

Jason Rosenfeld and Luke Beard have caught plenty of fish, but one catch on Saturday is one they'll remember for a lifetime.