Mudskippers (Periophthalmus kalolo) on a log in a mangrove habitat. This amphibious fish can climb and walk on land using its limb-like pectoral fins. It breathes on land using highly vascular sacks on its mouth and gills. 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 from eastern Africa, through southern Asia, to Japan and Australia. Filmed on Bunaken Island, Sulawesi, Indonesia.