 Nerodia clarkii

Nerodia clarkii, commonly known as the salt marsh snake, is a species of semiaquatic, nonvenomous, colubrid snake found in the southeastern United States, in the brackish salt marshes along the Gulf of Mexico from Florida to Texas, with a population in northern Cuba.The specific name, "clarkii", is in honor of American surveyor and naturalist John Henry Clark (1830-1885).