Aqua Man

An Aqua Man is an enemy in Donkey Kong for the Game Boy. They resemble short humanoid creatures wearing a diving suit. They first appear in Stage 3-3 on the Ship. Aqua Men only walk around horizontally, changing direction once they encounter a platform's bounds or a wall, and if Mario runs into them, he will lose a life. He can hop on them and hitch a ride as the creatures stroll. To defeat an Aqua Man, it has to be heaved and thrown at another enemy; alternatively, it can be crushed with a hammer.