Diamondback Water Snake

About 2 feet or .6 meter. Only the head came to the surface. Diamondback water snakes are predominantly brown, dark brown, or dark olive green in color, with a black net-like pattern along the back, with each spot being vaguely diamond-shaped. Dark vertical bars and lighter coloring are often present down the sides of the snake. The underside is generally a yellow or lighter brown color often with black blotching.