GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY
Magnificent anemone (Heteractis magnifica, lower centre) with a pink anemonefish (Amphiprion perideraion) above it. Anemonefish have a symbiotic relationship with their host anemones. They are protected from predators by the stinging tentacles of the anemones (to which they are immune), and the fish clean the anemones by feeding on small parasitic plants and animals. Photographed in the Andaman Sea off Thailand.
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