Sea urchins (Astropyga radiata). Sea urchins are echinoderms,relatives of the starfish. They possess a rigid body covered in numerous movable venomous spines,which protect them from predators. They also have five-fold body symmetry. Urchins feed on algae and other organic material which they scrape from the surface of rocks. Photographed off Sulawesi,Indonesia | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Douwma, Georgette |
Taille de l’image : | 4579 px × 3051 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |