An item that raises the power of Water type moves.
Locations
- G/S/C/HG/SS: One can be obtained in Cherrygrove City (requires a Pokémon with Surf)
- R/S/E: The Castform gift will be holding it, which is given in the Weather Institute.
- FR/LG: It is a prize in the Rocket Game Corner.
- D/P/Pt: One can be obtained in Pastoria City.
- B/W: One can be found in Wellspring Cave. Another can be obtained by talking to a person in the bottom left building and by answering Oshawott.