PETER SCOONES / SCIENCE PHOTO LIBRARY PETER SCOONES / SCIENCE PHOTO LIBRARY
Mudskipper (Periophthalmus sp.) resting on a tree root in a mangrove swamp. This amphibious fish can climb and walk on land using its limb-like pectoral fins (light brown, lower centre). It breathes on land using highly vascular sacks on its mouth and gills, and its skin contains cells that are filled with a watery fluid, which cushion its movements. Its protruding eyes are adapted for vision above the water. The mudskipper is found in swamps, estuaries and mud flats in Africa, Polynesia and Australia. Photographed on the island of Sulawesi in Indonesia.
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