Two tiny sea creatures with translucent bodies found on the California coast are both new species. They’re sea slugs, part of ...

Millions around the world were left completely stunned after a man spent days documenting a rare annual phenomenon involving a mysterious creature. Mason Simpson told Yahoo News he was "lucky" to have ...

We might have big brains and fancy gadgets, but some animals are wired with senses straight out of a sci-fi script. We're ...

"We're responding to phone calls and social media posts about stranded animals, we believe it's an environmental contagion ...

Rubbery blue sea creatures are washing up on California beaches by the thousands. The translucent blobs, known as by-the-wind sailors (Velella velella), began piling up Sunday (March 30) along several ...

When the fur trade wiped out North America’s sea otters in the early 20th century, sea urchins—a favorite otter food— ...

Luis Miguel Gutierrez Bringas, a sea-diving tour operator, captured video of a massive sunfish in its natural habitat off the ...

Before whales became the ocean’s majestic giants that could swallow a whole kiyak, they were land-dwelling creatures that ...

A PEOPLE staffer rode along as a rescued manatee named Owa was returned to the wild after three months of rehabilitation at ...

Scientists uncovered a thriving, never-before-seen ecosystem beneath Antarctica after a giant iceberg broke off.

Ecosystems which have never been seen before are being accidentally created by humans. They offer a stark look into the ...

Aoki Lee Simmons is posing for a purpose, and is supporting PETA and its latest campaign that urges people not to visit SeaWorld. Check out PEOPLE's exclusive first look of the new campaign.