Coral polyps (Physogyra sp.),close-up. The central mouth of each polyp is surrounded by a ring of tentacles which are normally retracted during the day. Each individual polyp is then embedded in a skeleton of calcium carbonate and is linked to the rest of the colony with tissue covering the outside as well as through channels set into the stone-like skeleton | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Oldfield, Matthew |
Bildgröße: | 3650 px × 2427 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |