Nep-Enut

Nep-Enut is a huge, blue monster that hides underwater in the game Super Mario World 2: Yoshi's Island. Nep-Enut will remain submerged until Yoshi approaches him. Then, the monster will rise, blocking Yoshiâ€™s path. If Nep-Enutâ€™s mouth is hit with an egg, he will return to the water to hide (and only his eyebrows will remain visible). If Yoshi jumps over the giant monster, Nep-Enut will give chase.

The Nep-Enut is to water as the Gargantua Blargg is to lava.