Stars twinkle overhead, but under the sea, stars huddle together. Sea stars, that is! Sea stars (Asteroidea), commonly known as starfish, are invertebrates called echinoderms — creatures with hard, ...

After years of scientific sleuthing, a team of West Coast researchers reported that they have identified a particular strain of ocean bacteria that has killed more than 6 billion sea stars since 2013.

University of Washington scientists continue to take steps toward replenishing the sea star population, a species that was wiped out along the West Coast more than a decade ago. The scientists spent ...

In the Pacific Ocean's kelp forests, the seaweed can be taller than trees. This vital ecosystem has been disappearing largely because of the loss of sea stars. They've been ravaged by a mysterious ...