Coral polyps (Tubastraea sp.). Coral use their sensitive tentacles to trap plankton particles from the water,which is then passed through to the mouth. The polyps build tough structures of calcium carbonate around themselves for protection and support. Coral reefs form the basis of extensive marine ecosystems | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Oldfield, Matthew |
Taille de l’image : | 4288 px × 2848 px |
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