Cloyster cannot evolve.
poliwhirl-poliwrath shelder-cloyster staryu-starmie eevee-vaporeon lombre-ludicolo
Get a shellder then use a water stone on it and it will evolve into a cloyster.
Give it to cloyster and he/ she will evolve into a viclam
cloyster doesn't evolve into any Pokemon. You can evolve it from Shellder but with a water stone rather than leveling up.
Catch a shellder then use a water stone on it it will evolve into cloyster.
Eevee - Vaporeon, Poliwhirl - Poliwrath, Shelder - Cloyster, Staryu - Starmie, Lombre - Ludicolo, Panpour - Simipour.
Evolve Shellder using a Water Stone.
As of Pokemon Diamond/Pearl/Platinum, the Pokemon that evolve via Water Stone are: * Poliwhirl (evolves into Poliwrath) * Shellder (evolves into Cloyster) * Staryu (evolves into Starmie) * Eevee (evolves into Vaporeon) and * Lombre (evolves into Ludicolo)
I know poliwhirl will evolve to poliwrath and that shelder will evole to cloyster with the waterstone
The only way to get Cloyster is to evolve Shellder.
mightyena doesn't evolve on Pokemon pearl, he doesn't evolve in any Pokemon game!
you can not evolve it