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Nep-Enut, also known as Submarine Nep-Enut or Giant Nep-Enut, is a water-based, blue variant of Gargantua Blargg that hides underwater in the games Super Mario World 2: Yoshi's Island, Yoshi's Island: Super Mario Advance 3, Yoshi's Island DS, Yoshi's New Island, Yoshi's Woolly World and Poochy & Yoshi's Woolly World. Nep-Enut will remain submerged until Yoshi approaches it. Then, the monster will rise, blocking Yoshi's path. Yoshi must shoot inside Nep-Enut's mouth with an egg for it to submerge in the water (and only its eyebrows will remain visible). If Yoshi jumps over the giant monster, Nep-Enut will give chase.
In Yoshi's Woolly World, Nep-Enuts only appear in the course, Frozen Solid and Chilled. By tossing three yarn balls into them, Yoshi is able to stun the Nep-Enuts for a few moments. They spit out Shy Guys at Yoshi, which is likely done to give Yoshi an infinite supply of yarn balls to stun the Nep-Enut with. Nep-Enuts can be instantly frozen with an Ice Watermelon. They can be climbed on during their frozen state, but will release themselves from the ice after a short while. However, Nep-Enuts can be defeated permanently if Yoshi pounds them while they are frozen.
At least one Nep-Enut was originally going to appear in Paper Mario, but was removed from the game for unknown reasons.
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