John Pearse, Don Wobber, Biologists: Sea Star Behavior


John Pearse studied sea stars in the intertidal for a long time and assumed they had no social interactions. Then he met long-time diver Don Wobber who has a passion for sea stars. He wondered about the sea stars poses revealed in his videos. Using a time-lapse camera, Wobber found his answer: sea stars do interact with each other. Wobber shared his video with Pearse who was amazed at the complex social behaviors.

Next Generation Science Standards for this Video

Even though sea star behavior is limited by a simple body plan, they are adapted to interact in ways that almost appear social.

John Pearse, a biologist who studies sea stars in the intertidal, teams with Don Wobber, a long-time diver to study sea star behavior.

Scientist in this video

One of the really fascinating things about echinoderms is that they don't seem to grow old. They can live forever. The only thing that kills a sea star is physical harm or disease. Some sea stars can regenerate their whole body from one part of the ray. How do they do that? -- John Pearse