Starfish Regeneration

Among the amazing abilities of starfish is a remarkable talent for regeneration. A starfish that loses a ray can grow a whole new one, given time. Most species can only regenerate if the central part of the body is intact, but a few species can grow back even from a single ray. Those species, like Linckia, will regenerate several whole starfish from a single starfish that gets torn apart.
Asterias vulgaris with three regenerating rays. And just look at that lovely orange madreporite. (From Martinez's Marine Life of the North Atlantic.)
Linckia regenerating five rays from a single surviving ray. Specimens like this are often called "comets."

 


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Last updated January 26, 2000.