Water Mocassin Agkistrodon piscivorus

Water Mocassin
The Water Mocassin, also called Cottonmouth because of its white inside gape, is a venomous pit viper native to southeastern USA. It is the world's only semi-aquatic viper and is usually found in or near water, including coastal marine. Its diet is mainly fish. It can reach some 3 feet (90cm) in length. The photo above was taken in Texas by Penelope Tuturea.