Notorious Portuguese man-of-wars are washing up on North Carolina beaches, prompting warnings along the roughly 150-mile ...

Types of large sea slugs called the California sea hare and black sea hare can be found off the coast and in tide pools ...

Types of large sea slugs called the California sea hare and black sea hare can be found off the coast and in tide pools ...

The Mosura fentoni, or "sea moth," is a newly discovered type of arthropod that would have lived in the deep sea more than ...

Massive sea creatures were spotted off the coast of California, onlookers said. Four fin whales were seen among thousands of ...

Researchers have discovered an ancient moth-like sea predator in a treasure trove of museum fossils in Canada. The ...

Thousands of feet below the surface of the Indian Ocean, a reddish sea creature with “massive eyes” used its “long” arms to ...

Interested in animals that eat kelp and seaweed? Read on to learn about 14 amazing marine animals that chow down on this ...

Learn more about some recent new species discoveries: ...

A remotely operated submersible saw the “semi-gelatinous” animal lying on the ocean floor and “flying underwater.” Take a ...

Scientists in the South China Sea scooped up some muck, sifted through it and found the “rarely encountered” animal. Take a ...