Cloyster

Cloyster is a Water/Ice type Pokémon introduced in Generation 1. It is known as the Bivalve Pokémon.

Pokédex data

National № 091
Type Water Ice
Species Bivalve Pokémon
Height 1.5 m (4′11″)
Weight 132.5 kg (292.1 lbs)
Abilities 1. Shell Armor
2. Skill Link
Overcoat (hidden ability)
Local № 091 (Red/Blue/Yellow)
170 (Gold/Silver/Crystal)
091 (FireRed/LeafGreen)
172 (HeartGold/SoulSilver)
037 (X/Y — Coastal Kalos)
116 (Sun/Moon — Alola dex)
139 (U.Sun/U.Moon — Alola dex)
091 (Let's Go Pikachu/Let's Go Eevee)
151 (Sword/Shield)

Training

EV yield 2 Defense
Catch rate 60 (7.8% with PokéBall, full HP)
Base Friendship 70 (normal)
Base Exp. 184
Growth Rate Slow

Breeding

Egg Groups Water 3
Gender 50% male, 50% female
Egg cycles 20 (4,884–5,140 steps)

Base stats

HP 50
210 304
Attack 95
175 317
Defense 180
328 504
Sp. Atk 85
157 295
Sp. Def 45
85 207
Speed 70
130 262
Total 525 Min Max

The ranges shown on the right are for a level 100 Pokémon. Maximum values are based on a beneficial nature, 252 EVs, 31 IVs; minimum values are based on a hindering nature, 0 EVs, 0 IVs.

Type defenses

The effectiveness of each type on Cloyster.

Evolution chart

(use Water Stone)

Cloyster changes

Pokédex entries

Red
Blue
When attacked, it launches its horns in quick volleys. Its innards have never been seen.
Yellow For protection, it uses its harder-than-diamonds shell. It also shoots spikes from the shell.
Gold Once it slams its shell shut, it is impossible to open, even by those with superior strength.
Silver CLOYSTER that live in seas with harsh tidal currents grow large, sharp spikes on their shells.
Crystal Even a missile can’t break the spikes it uses to stab opponents. They’re even harder than its shell.
Ruby
Sapphire
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.
FireRed Its shell is extremely hard. It cannot be shattered, even with a bomb. The shell opens only when it is attacking.
LeafGreen When attacked, it launches its horns in quick volleys. Its innards have never been seen.
Emerald It swims in the sea by swallowing water, then jetting it out toward the rear. The CLOYSTER shoots spikes from its shell using the same system.
Diamond
Pearl
Platinum
It fights by keeping its shell tightly shut for protection and by shooting spikes to repel foes.
HeartGold Once it slams its shell shut, it is impossible to open, even by those with superior strength.
SoulSilver CLOYSTER that live in seas with harsh tidal currents grow large, sharp spikes on their shells.
Black
White
Black 2
White 2
It fights by keeping its shell tightly shut for protection and by shooting spikes to repel foes.
X Cloyster that live in seas with harsh tidal currents grow large, sharp spikes on their shells.
Y Its shell is extremely hard. It cannot be shattered, even with a bomb. The shell opens only when it is attacking.
Omega Ruby
Alpha Sapphire
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.
Sun Its hard shell cannot be shattered—not even by a bomb. The contents of the shell remain unknown.
Moon Excavation of the tombs of ancient hunting tribes has turned up many spears tipped with spikes that had fallen off this Pokémon’s shell.
Ultra Sun If areas of Cloyster’s very hard shell get damaged, those areas swell, gradually growing into large sharp spikes.
Ultra Moon Slowpoke tails are its favorite food. It has even been known to come up on land to look for Slowpoke from time to time.
Let's Go Pikachu
Let's Go Eevee
For protection, it uses its harder-than-diamonds shell. It also shoots spikes from the shell.
Sword Its shell is extremely hard. It cannot be shattered, even with a bomb. The shell opens only when it is attacking.
Shield Once it slams its shell shut, it is impossible to open, even by those with superior strength.

Moves learned by Cloyster

Moves learnt by level up

Cloyster learns the following moves in Pokémon Sword & Shield at the levels specified.

Lv.
Move
Type
Cat.
Power
Acc.
1Aurora BeamIce 65 100
1Hydro PumpWater 110 80
1Ice BeamIce 90 100
1Ice ShardIce 40 100
1Icicle CrashIce 85 90
1Icicle SpearIce 25 100
1Iron DefenseSteel
1LeerNormal 100
1ProtectNormal
1Razor ShellWater 75 95
1Shell SmashNormal
1SpikesGround
1SupersonicNormal 55
1TackleNormal 40 100
1Toxic SpikesPoison
1Water GunWater 40 100
1WhirlpoolWater 35 85
1WithdrawWater

Moves learnt on evolution

Cloyster learns the following moves when it evolves in Pokémon Sword & Shield (regardless of level).

Move
Type
Cat.
Power
Acc.
Icicle SpearIce 25 100

Egg moves

Cloyster does not learn any moves by breeding in Pokémon Sword & Shield.

Moves learnt by TM

Cloyster is compatible with these Technical Machines in Pokémon Sword & Shield:

Moves learnt by TR

Cloyster is compatible with these Technical Records in Pokémon Sword & Shield:

Moves learnt by level up

Cloyster learns the following moves in Pokémon Let's Go Pikachu & Let's Go Eevee at the levels specified.

Lv.
Move
Type
Cat.
Power
Acc.
1BarrierPsychic
1LeerNormal 100
1Spike CannonNormal 20 100
1TackleNormal 40 100
1TwineedleBug 25 100
1Water GunWater 40 100
1WithdrawWater

Moves learnt on evolution

Cloyster learns the following moves when it evolves in Pokémon Let's Go Pikachu & Let's Go Eevee (regardless of level).

Move
Type
Cat.
Power
Acc.
Spike CannonNormal 20 100

Moves learnt by TM

Cloyster is compatible with these Technical Machines in Pokémon Let's Go Pikachu & Let's Go Eevee:

Cloyster sprites

Type Generation 1 Generation 2 Generation 3 Generation 4 Generation 5 Generation 6 Generation 7
Normal Cloyster  sprite from Red & Blue Cloyster  sprite from Silver Cloyster  sprite from Ruby & Sapphire Cloyster  sprite from Diamond & Pearl Cloyster  sprite from Black & White Cloyster  sprite from X & Y Cloyster  sprite from Ultra Sun & Ultra Moon
Shiny Cloyster Shiny sprite from Silver Cloyster Shiny sprite from Ruby & Sapphire Cloyster Shiny sprite from Diamond & Pearl Cloyster Shiny sprite from Black & White Cloyster Shiny sprite from X & Y Cloyster Shiny sprite from Ultra Sun & Ultra Moon

Where to find Cloyster

Red
Blue
Yellow
Evolve Shellder
Gold
Silver
Crystal
Evolve Shellder
Ruby
Sapphire
Trade/migrate from another game
FireRed Evolve Shellder
LeafGreen
Emerald
Trade/migrate from another game
Diamond
Pearl
Platinum
HeartGold
SoulSilver
Evolve Shellder
Black
White
Route 13, Undella Bay, Undella Town
Black 2
White 2
Route 13, Undella Town, Humilau City, Seaside Cave
X Trade/migrate from another game
Y Route 8
Omega Ruby
Alpha Sapphire
Trade/migrate from another game
Sun
Moon
Ultra Sun
Ultra Moon
Evolve Shellder
Let's Go Pikachu
Let's Go Eevee
Seafoam Islands
Sword
Shield
Giant's Seat

Other languages

English Cloyster
Japanese パルシェン (Parshen)
German Austos
French Crustabri

Name origin

clam
marine creature
oyster
marine creature
cloister
to confine or seclude oneself