Thin section of fossil coral,close-up. Each of the circular structures is the remains of a single polyp's skeleton. Corals are colonial marine organisms that live in shallow seas. They secrete an external skeleton of calcium carbonate. Over time,these build up into vast coral reefs,each new inhabitant building on the empty skeletons of its ancestors. Magnification: x2 when printed 10 centimetres high | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wiersma, Dirk |
Bildgröße: | 3898 px × 4990 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |