GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY
Starfish growing a new body. The large arm (upper right) was severed from the body of a mature starfish. If the victim survived the injury, it will have grown a new arm. The arm, meanwhile, can grow a whole new starfish, as seen by the four developing arms at lower left. Starfish at this stage are sometimes called "comets", because of their unusual appearance. Photographed in the Maldives.
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