He removes starfish from one tide pool while leaving them in another. (driving orchestral music) Months after months, Paine returns, clearing out starfish. And he sees the tide pool changing.

Nature showcases diverse nervous systems beyond a single command center. Several animals, including octopuses, leeches, and starfish, have evolved multiple brain-like organs or distributed nerve ...

Starfish. Also known as sea stars. We see them all over the place. They're a ubiquitous ocean species, with around 1,800 living species occurring in all the world's oceans, and even at depths ...

After spending December producing our pictures of the year, Nature’s images of the month returns with a bumper round up of the best images and videos from the past two months. This video of ...

The Bald, Grooved Patches: Starfish are powered by plumbing: a series of pipes carry food and oxygen through their bodies. Water pressure builds up in these pipes, which helps to support their bodies.

Sunflower sea stars, huge starfish that until recently thrived in waters up and down the west coast of North America, are threatened with extinction and should be protected under the Endangered ...