Coral skeleton. Corals consist of colonies of numerous very small animals called polyps. When polyps die, they secrete their exoskeletons of hard calcium carbonate (CaCo3). New polyps grow on top of the remains of former colonies. Over the years stony polyps can create massive coral reefs. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Science Source / Turtle Rock Scientific |
Bildgröße: | 5166 px × 3416 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |