Yes, many species of snakes are excellent swimmers and can move through water with ease. Some species of snakes, such as water snakes and sea snakes, are adapted to living in aquatic environments and are highly skilled swimmers. They use a combination of lateral undulation and serpentine movements to propel themselves through the water, and they can hold their breath for extended periods of time while submerged.
Even species of snakes that are not specialized for aquatic life can swim when necessary. For example, some species of venomous snakes in North America, such as cottonmouths and copperheads, are known to swim across bodies of water to reach new habitats or escape predators. However, not all snakes are comfortable in the water, and some may drown if they are unable to find a way out of a body of water.