These deep-sea organisms, some being thousands of years old, deserve to be treated with a similar gentleness when we're interacting with them." Uniquely, the hand is operated by a single rotary motor.

An extinct ribbonlike sea creature about the size of a human hand was one of the earliest animals to evolve a precursor of a backbone. Scientists recently identified the animal’s nerve cord by ...

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.

While surveying the Arabian Sea off the coast of Pakistan, researchers discovered an approximately 9-inch sea creature with a “slender,” “sandwich-like” tail.

A bizarre sea creature was spotted slowly crawling along the sand after a high tide at the Rye Harbor Nature Reserve in the U.K. “While some might think it looks like something out of a sci-fi ...