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Water Bottles are used to fill up F.L.U.D.D. with water in Super Mario Sunshine. They are very useful when F.L.U.D.D.'s water tank is empty or close to being empty and there are no bodies of water available for Mario to refill it. They are found only on Isle Delfino, and are occasionally dropped by enemies after they have been defeated. They disappear almost immediately after they are dropped, however, so the player must be extremely quick when attempting to collect them. Water Bottles come in two sizes. Small ones refill half of F.L.U.D.D.'s tank, while big ones refill F.L.U.D.D.'s tank completely. Small Water Bottles are hexagonal and have a Noki label with a blue background and big Water Bottles are rectangular and have a Pianta label written "MONTE DRINK" with a green background.