Mudskippers are amphibious fish that spend much of their time out of the water. They breathe air through their skin and the lining of their mouth, much like frogs and salamanders. Their pectoral fins have evolved to be hinged, and work similarly to arms on terrestrial animals. We spotted these at Sungei Buloh Wetlands in Singapore. Read more about wetland wildlife in our post, Singapore's Sungei Buloh Wetlands.