Coral skeleton. Corals consist of colonies of small animals called polyps,which feed by filtering plankton from the passing water current. When a polyp dies the skeleton remains and new polyps grow on top of it,forming a coral reef. Hard corals secrete calcium carbonate,which forms a protective skeleton around the polyps | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Wiersma, Dirk |
Taille de l’image : | 4707 px × 3712 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |