PETER SCOONES / SCIENCE PHOTO LIBRARY PETER SCOONES / SCIENCE PHOTO LIBRARY
Tomato anemonefish (Amphiprion frenatus) with an anemone on a coral reef. Anemonefish, also known as clownfish, live in association with anemones. Both partners benefit, so the association is termed mutualistic. Each species of anemonefish lives with a different species of anemone. Slime on the fish's skin prevents the anemone's stinging cells from damaging it. The fish sleep, hide from danger, eat, and lay their eggs between the poisonous tentacles. The protection offered by the anemone is exchanged for food brought by the anemonefish, and its cleaning abilities. Photographed off Brunei.
Model release not required. Property release not required.