Swift Swim (すいすい Swim Swim) is an ability that doubles the user's Speed stat when it is raining.

Game descriptions

Pokémon

Pokédex	Pokémon	Sprite	Type	Obtained
#054	Psyduck			Dream World
#055	Golduck			Dream World
#060	Poliwag			Dream World
#061	Poliwhirl			Dream World
#062	Poliwrath			Dream World
#116	Horsea			Natural
#118	Goldeen			Natural
#119	Seaking			Natural
#129	Magikarp			Natural
#138	Omanyte			Natural
#139	Omastar			Natural
#140	Kabuto			Natural
#141	Kabutops			Natural
#211	Qwilfish			Natural
#226	Mantine			Natural
#230	Kingdra			Natural
#270	Lotad			Natural
#271	Lombre			Natural
#272	Ludicolo			Natural
#283	Surskit			Natural
#347	Anorith			Dream World
#348	Armaldo			Dream World
#349	Feebas			Natural
#367	Huntail			Natural
#368	Gorebyss			Natural
#369	Relicanth			Natural
#370	Luvdisc			Natural
#418	Buizel			Natural
#419	Floatzel			Natural
#456	Finneon			Natural
#457	Lumineon			Natural
#458	Mantyke			Natural
#535	Tympole			Natural
#536	Palpitoad			Natural
#537	Seismitoad			Natural
#564	Tirtouga			Dream World
#565	Carracosta			Dream World
#614	Beartic			Dream World

Trivia

• The three non-Water-type Pokémon to have Swift Swim as their Ability have it as a Hidden Ability.
• In Pokémon Mystery Dungeon, when a Pokémon with this ability uses a movement and it's raining, the movement is repeated again without spending PP on repetition.

In other languages