Sea urchins (Astropyga radiata) with a school of cardinalfish (family Apogonidae). 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 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Douwma, Georgette |
Bildgröße: | 4423 px × 3172 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |