Can Copperheads Bite Underwater?

Yes. Snakes can open their mouths and bite if provoked underwater.

Can copperheads swim in water?

Copperheads in the Water

Although they're usually on dry land, their swimming skills are proficient. Snakes, across the board, are generally capable of swimming, even if they don't do it too often.

Can any snakes bite underwater?

Besides sea-snakes, there are two common snakes that can live in or near water - the cottonmouth (water moccasin) and the water snake. Not only can snakes bite underwater, but water moccasins join a list of more than 20 species of venomous snakes in the United States making them even more of a threat.