Here in NC, you better learn them. It kills me when I hear about"water moccasins" west of Raleigh. Not too common. In the water,they swim with about one third of the front of their bodies above water.Lotsa copperheads(called"pilots" by some locals),several diff. rattlers including a red one found in the hyde co. area{No where else in the world} Pit viper head,elliptical eyes.Saw two rattlers mating once. A sawyer extractor goes with me afield,one in the truck and boat.Like them or not,a bad snake can ruin your day.