Rammerhead

Rammerheads are rare enemies that first appear in Super Mario 3D World. Their name is a portmanteau of "hammerhead" and "rammer". They only appear in the level, Rammerhead Reef. Rammerheads are pinkish (purplish underwater) hammerhead shark-like fish with wide, spiked roll-shaped snouts. They come in two sizes: the bigger ones are more common, while smaller ones are the rarest. These enemies have three kinds of attack: some swim in a predetermined pattern, some swim around stones, and others jump out of the water. They can only be defeated by Invincible Mario.