GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY
Warty frogfish (Antennarius maculatus) on rocks. This fish is coloured and shaped to look like a piece of sponge or rock. This means it can avoid detection by its prey, smaller fish and crustaceans, until it comes close enough to be engulfed suddenly. The warty frogfish inhabits coral reefs in the tropical Indo-Pacific region from the Indian Ocean to Micronesia. It can reach 15 centimetres in length. Photographed in the Andaman Sea, Thailand.
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