Water Moccasin.jpg

Dreamstime

Water moccasins, or cottonmouth snakes, are usually found in streams, marshes, swamps and the shores of ponds and lakes. They are strong swimmers and have been known to swim in the ocean. They are North America's only venomous water snake and range from 2 to 4 feet. The results from a bite can be serious or even deadly, though experts emphasize that fatalities are rare.