Thousands of meters below the ocean's surface lurk some gigantic creatures, much larger than their shallow-water brethren. Scientists have a few hunches for why this happens, but the debate continues.

About 90 percent of species found in the Clarion Clipperton Zone have never been identified, yet they may be at risk from mining for minerals such as cobalt and nickel. This sea urchin, found in the ...

A global study finds that everyday boat traffic can disrupt ocean animals like whales, sharks, and sea turtles - even without collisions.

In the vast and colorful—and sometimes terrifying—world of marine life, few creatures are as captivating as the Costasiella kuroshimae. Affectionately known as the "leaf sheep" or the "Shaun-the-sheep ...

Dive to places uninhabitable by humans and encounter regal whales and colorful reef life. Ocean Animals features the world’s most charismatic animals that inhabit a realm humans can only fleetingly ...

Scientists in Singapore found a sea animal with 96 arms and discovered a new species, a study said. Photo shows a representative beach in Singapore. Photo from Christoph Theisinger via Unsplash ...

Scientists analyzed thousands of autopsies of seabirds, sea turtles and marine mammals and found that even small amounts of ingested plastic can be deadly. By Sachi Kitajima Mulkey Two baseballs for a ...

Deep-sea animals have been getting a lot of attention lately because every new video or photo from the ocean’s deepest layers shows creatures that look completely different from anything we see on ...

While it is filled with lots of beautiful creatures and things to explore, the ocean also houses deadly creatures capable of striking fear into even the bravest of hearts and causing harm. The great ...

A common neurotoxin produced by algae blooms is making California sea lions more aggressive. Here’s why it has the power to change behavior—and the danger it poses. Rescuers capture a sick sea lion in ...