Sand dollar shell,close-up. The holes on the surface of the shell are pores through which the animal uses to move water into its internal water- vascular system. A sand dollar is an echinoderm closely related to the sea urchin. A key distinguishing feature of this animal is its five- fold (pentameral) symmetry. Photographed in the Malcca Straits,western Malaysia | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Clutson, Michael |
Taille de l’image : | 3600 px × 5401 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |