The sea snake is a type of marine reptile found primarily in warm coastal waters of the Indian and Pacific Oceans. They are known for their elongated bodies and paddle-like tails, which help them swim efficiently. Sea snakes are highly adapted to life in the water, with many species being completely aquatic. These snakes are generally non-aggressive and feed mainly on fish and eels. While they possess venom to subdue their prey, most species are not dangerous to humans. Sea snakes breathe air and must surface regularly, making them unique among reptiles.