Nep-Enut

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Nep-Enut is a huge, blue monster that hides underwater in the games Super Mario World 2: Yoshi's Island and Yoshi's Island DS. Nep-Enut will remain submerged until Yoshi approaches him. Then, the monster will rise, blocking Yoshi's path. If Nep-Enut'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. In Yoshi's Story Nep-Enuts are only found in the Piranha Grove. Nep-Enuts are much bigger and more detailed in Yoshi's Island DS than in Super Mario World 2: Yoshi's Island.

Trivia

• The Super Mario World 2: Yoshi's Island box art and game cover shows Yoshi about to cross a gap with a Nep-Enut in hot pursuit.
• Nep-Enuts have their own level named after them in World 3 of Yoshi's Island: Nep-Enuts Domain.
• Switch the last four letters in Nep-Enut, and you get "Neptune", the God of the sea.
• The Nep-Enut is to water as the Blargg is to lava.
• Early screenshots of Paper Mario showed that Nep-Enuts were originally going to be in the game.