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Cloyster is a black, pearl-like Pokémon. It is encased inside a light grey shell, which is surrounded by a second jagged, blue-violet outer shell casing. It has one barb-like spike protruding from above its head, and multiple conical horns on its outer shell. Its shell is harder than diamond with spikes that are even harder; harsh tidal currents will affect the size and sharpness of these spikes. On its pearl-like face, it has two white eyes and a mouth. Aside from its face and head, its internal anatomy has never been seen.
It typically only opens its shell to attack an opponent. However, it is fully capable of retaliating against any enemy with its shell tightly closed. With rapid succession, it launches its spikes at the foe, keeping them repelled. Once it has shut itself in, it is impossible to open its shell from the outside. This impressive defense allows it to withstand anything from a bomb blast to even a missile strike. The same projectile system it uses to launch its spikes is also used for swimming. It swallows seawater, and then ejects it towards the rear propelling it through with siphon-jet propulsion. It lives on the sea floor, nestled among the rocks and coral.
Giovanni also uses a Cloyster despite it not being the type he specifies in. It was first used in Make Way for Magmar! to freeze two Magmar in solid ice and then killed them by snapping the ice into pieces. It was used again in Golly, Golem! where it froze Red's Poliwrath.
Lorelei owns a Cloyster that she uses as one of her main Pokémon alongside her Dewgong which first appeared in Cloystered.
Pokémon Pinball: A Cloyster appears on the Blue Table. When the pinball can be shot into the Cloyster, Catch'em Mode is activated, allowing for the capture of a Pokémon.
Cloyster is capable of swimming in the sea. It does so by swallowing water, then jetting it out toward the rear. This Pokémon shoots spikes from its shell using the same system.
Cloyster is capable of swimming in the sea. It does so by swallowing water, then jetting it out toward the rear. This Pokémon shoots spikes from its shell using the same system.
This Pokémon article is part of Project Pokédex, a Bulbapedia project that aims to write comprehensive articles on each Pokémon species, as well as Pokémon groups and forms.