A riotous photography collection from a recent underwater mission off the coast of Chile shows new and fascinating deep-sea ...

A common neurotoxin produced by algae blooms is making California sea lions more aggressive. Here’s why it has the power to ...

A calving iceberg exposed a region that never before had been seen by human eyes, revealing a vibrant, thriving ecosystem ...

They roam ocean currents while feeding on sea jellies and other tiny critters, and are considered harmless to humans.

A tiny, wrinkly, sack-like sea creature with a huge mouth and no anus could be your ancestor. Saccorhytus was an ancient creature that roamed the Earth 540 million years ago, and according to a ...

Scientists found a “large”-eyed sea creature with “canine-like” teeth on reefs in the South Pacific Ocean and discovered a new species. Photo from Getty Images / iStockphoto Near an island ...

While operating the deep-sea robot nearly 7,000 feet below the surface, the machine’s camera captured a creature that appeared ... but look like they are missing a central body for the legs ...

While this blue sea creature appears to be writhing in pain, it’s actually just moving around. The cerata, or feather-like protrusions from the body, move easily and gracefully.