"The implications of our study go beyond the sunflower sea star." New study reveals hidden dangers threatening mega-starfish ...

Divers have captured rare footage of Northern Pacific sea stars thriving beneath the frozen surface of the Sea of Japan. The video shows these marine invertebrates navigating the crystal-clear, icy ...

“There’s been a lot of work over the years on vision in a variety of fish from shallow water to the deep sea, but there hasn’t been much at all done on vision in animals that sit on the bottom,” says ...

Scientists discovered that crabs eat young crown-of-thorns starfish, reducing their population before they damage coral reefs ...

This story appears in the June 2011 issue of National Geographic magazine. The sea star—often called a starfish, though it's no more a fish than it is a sheepdog—ranks with the most ...

Small, hidden crabs may be the missing link influencing coral-eating starfish populations, according to a study published in the Proceedings of the National Academy of Sciences. While we know ...