Cloyster

Cloyster official artwork
#0091

Cloyster

Bivalve Pokémon

WATERICE

Its shell is extremely hard. It cannot be shattered, even with a bomb. The shell opens only when it is attacking.

Cloyster is No. 0091 in the National Pokédex and is listed here as a Water and Ice-type Bivalve Pokémon. Its shell is extremely hard. It cannot be shattered, even with a bomb. The shell opens only when it is attacking. This page brings together its key game data, including typing, abilities, base stats, evolution details, forms, Pokédex entries and moves, so it can be used as a quick reference before building out a deeper guide.

Cloyster first belongs to Generation I. Cloyster does not have a longer evolution chain recorded in the current local data. Its strongest listed base stat is Defense, which helps show where it naturally fits when comparing Pokémon by role. Its abilities can include Shell Armor, Skill Link and Overcoat, giving players useful options when comparing forms, movesets and team roles. The sections below are generated from the local Pokémon database and can be expanded later with matchup advice, best games to use it in, notable appearances and more detailed strategy notes.

Cloyster at a glance

Type
WATERICE
Weak to
ELECTRICGRASSFIGHTINGROCK
Best base stat
Defense — 180
Abilities
Shell Armor, Skill Link, Overcoat (Hidden)
Evolution
Final stage or no evolution data
Height
1.5 m
Weight
132.5 kg
Generation
Generation I
Growth rate
Slow
Capture rate
60
Base happiness
70

Base stats

Hp50
Attack95
Defense180
Special Attack85
Special Defense45
Speed70
Total525

Type effectiveness

Damage taken when Cloyster is hit by each type:

Weak to

ELECTRICGRASSFIGHTINGROCK

Resists

WATER½×

Strongly resists

ICE¼×

Based on Water / Ice typing. Abilities may modify these matchups.

Evolution family

Use Item · Water Stone
Selected game context

Pokémon Gold and Silver

Pokédex entries

GameEntry
Gold

Once it slams its shell shut, it is impossible to open, even by those with superi­ or strength.

Silver

CLOYSTER that live in seas with harsh tidal currents grow large, sharp spikes on their shells.

Level-up moves

LevelMoveTypePowerAccuracy
1Aurora BeamICE65100
1ProtectNORMAL
1SupersonicNORMAL55
1WithdrawWATER
41Spike CannonNORMAL20100