The Blooper used to be a pretty common underwater enemy, which is a bit more scarce in 3D World, as they are only found in three levels. When you encounter a Blooper and get close enough, they will notice your character and charge towards them. Otherwise, they will simply swim around. Only certain attacks can actually defeat a Blooper in this game, such as a Ground Pound, Fire Flower, Cat Suit swipe, Boomerang Flower or tail swipe from the Tanooki Suit. Should you happen to land on top of them, they will not be defeated, although you also won’t take damage.