Water Barrel
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 official name is found, then the article should be moved to its appropriate title.
A Water Barrel is a barrel full of water found only in Super Mario Sunshine. They can be picked up by Mario and thrown at large amounts of Goop to wash it away. Using Water Barrels to wash up Goop is significantly faster than using F.L.U.D.D. Water Barrels can also be Ground Pounded to refill F.L.U.D.D. The barrels especially helped Mario clearing Episode 6 of Sirena Beach, where he had to remove Goop from all over the beach very quickly. In Episode 4 of Pianta Village, a single water barrel can be used to cool down the giant Chain Chomp instantly.