Eyeball Monsters are enemies from Phantom Hourglass.
Eyeball Monsters are winged eyeballs with two horns that live in the northern and southeastern seas of the World of the Ocean King. They appear in the sky and usually come in packs of five. They slowly dash toward the S.S. Linebeck and will deal a minimal amount of damage. They are quite easy to defeat and one Cannon shot will do the trick.
They are also encountered during the battle with Massive Eye when Link tries to dock at Goron Island. In the battle, Massive Eye will send out Eyeball Monsters from its mouth to dash at the S.S. Linebeck. Eyeball Monsters come in two varieties; white and red. The red one is the leader of the packs, and will drop a Red Rupee when defeated.