Water Ball
The title of this article is conjectural; an official name for the article's subject has not been found, so it has been given a fitting title by the editors. If an acceptable name is found, then the article should be moved to the new title.
Giant Bubbles are large masses of water that float (and sometimes move) in the air. They are only found in New Super Mario Bros. Wii, and within the game, are only found in World 7-2. If the player jumps into one, he will start behaving as if he was underwater. This means that the player can swim inside the bubble until going out of it, at which point the player will jump out. Giant Bubbles usually are used to access high areas or to cross large gaps, but they can also be used to avoid enemies down below, thus providing a safer route for the player to travel through. Bullet Bills will travel slower when they go through a giant bubble.