These large snakes have a bad habit of lying coiled up, in the middle of a warm road. However, as their common name suggests, they are also very much an aquatic species. They are relatively large, ranging up to 3 feet+, and are robust, unlike some of the more slender snakes we see such as the smooth green snake. They have a similar pattern to the milk snake, but as the snakes age, their pattern fades and they tend to look almost black. The photos below show a variety of colours and ages.