A somewhat different Poké Ball that works especially well when catching Pokémon that live underwater.

Used in battle : Attempts to [catch]{mechanic:catch} a wild Pokémon. If the wild Pokémon was encountered by surfing or fishing, this ball has a catch rate of 3.5×. Otherwise, it has a catch rate of 1×. If used in a trainer battle, nothing happens and the ball is lost.