Water snakes

Some snakes are adapted to arboreal life, some to the sand dunes of deserts and others to the freshwater, like many Natricidae species. In this family, various genus are spread all over the world, like the genus Natrix (water snakes) in Europe and North Africa, Thamnophis (garter snakes) in North America, Amphiesma (Keelbacks) in Asia and many others.
Four species belong to the water snakes genus: N. maura, N. megalocephala, N. natrix and N. tessellata. The lastone, also called dice snake, is the most apt to freshwater life, its eyes and nostrils are oriented slightly upwards, in order to see and breathe easily with most of their bodies underwater. The dice snake is thus an excellent swimmer, being however slower on the ground.