Cloyster

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

Cloyster

Cloyster artwork by Ken Sugimori

Additional artwork

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)
132 (The Isle of Armor)

Training

EV yield 2 Defense
Catch rate 60 (7.8% with PokéBall, full HP)
Base Friendship 50 (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.

NorFirWatEleGraIceFigPoiGro
½22¼2
FlyPsyBugRocGhoDraDarSteFai
2

Evolution chart

#090
Shellder
Water
(use Water Stone)
#091
Cloyster
Water · Ice

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

Sword/Shield Let's Go Pikachu/Let's Go Eevee

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 BeamIceSpecial 65 100
1Hydro PumpWaterSpecial 110 80
1Ice BeamIceSpecial 90 100
1Ice ShardIcePhysical 40 100
1Icicle CrashIcePhysical 85 90
1Icicle SpearIcePhysical 25 100
1Iron DefenseSteelStatus — —
1LeerNormalStatus — 100
1ProtectNormalStatus — —
1Razor ShellWaterPhysical 75 95
1Shell SmashNormalStatus — —
1SpikesGroundStatus — —
1SupersonicNormalStatus — 55
1TackleNormalPhysical 40 100
1Toxic SpikesPoisonStatus — —
1Water GunWaterSpecial 40 100
1WhirlpoolWaterSpecial 35 85
1WithdrawWaterStatus — —

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 SpearIcePhysical 25 100

Egg moves

Cloyster learns the following moves via breeding in Pokémon Sword & Shield. Details and compatible parents can be found on the Cloyster egg moves page.

Move
Type
Cat.
Power
Acc.
Aqua RingWaterStatus — —
Bubble BeamWaterSpecial 65 100
Life DewWaterStatus — —
Water PulseWaterSpecial 60 100

Move Tutor moves

Cloyster can be taught these attacks in Pokémon Sword & Shield from move tutors (details):

Move
Type
Cat.
Power
Acc.
Steel RollerSteelPhysical 130 100

Moves learnt by TM

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

TM
Move
Type
Cat.
Power
Acc.
07Pin MissileBugPhysical 25 95
08Hyper BeamNormalSpecial 150 90
09Giga ImpactNormalPhysical 150 90
16ScreechNormalStatus — 85
17Light ScreenPsychicStatus — —
20Self-DestructNormalPhysical 200 100
21RestPsychicStatus — —
24SnoreNormalSpecial 50 100
25ProtectNormalStatus — —
27Icy WindIceSpecial 55 95
31AttractNormalStatus — 100
33Rain DanceWaterStatus — —
35HailIceStatus — —
36WhirlpoolWaterSpecial 35 85
39FacadeNormalPhysical 70 100
40SwiftNormalSpecial 60 ∞
45DiveWaterPhysical 80 100
46Weather BallNormalSpecial 50 100
51Icicle SpearIcePhysical 25 100
53Mud ShotGroundSpecial 55 95
54Rock BlastRockPhysical 25 90
55BrineWaterSpecial 65 100
57PaybackDarkPhysical 50 100
64AvalancheIcePhysical 60 100
76RoundNormalSpecial 60 100
83Razor ShellWaterPhysical 75 95
96Smart StrikeSteelPhysical 70 —

Moves learnt by TR

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

TR
Move
Type
Cat.
Power
Acc.
03Hydro PumpWaterSpecial 110 80
04SurfWaterSpecial 90 100
05Ice BeamIceSpecial 90 100
06BlizzardIceSpecial 110 70
19Tri AttackNormalSpecial 80 100
20SubstituteNormalStatus — —
23SpikesGroundStatus — —
26EndureNormalStatus — —
27Sleep TalkNormalStatus — —
46Iron DefenseSteelStatus — —
54Toxic SpikesPoisonStatus — —
57Poison JabPoisonPhysical 80 100
98LiquidationWaterPhysical 85 100

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.
1BarrierPsychicStatus — —
1LeerNormalStatus — 100
1Spike CannonNormalPhysical 20 100
1TackleNormalPhysical 40 100
1TwineedleBugPhysical 25 100
1Water GunWaterSpecial 40 100
1WithdrawWaterStatus — —

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 CannonNormalPhysical 20 100

Moves learnt by TM

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

TM
Move
Type
Cat.
Power
Acc.
01HeadbuttNormalPhysical 70 100
04TeleportPsychicStatus — —
05RestPsychicStatus — —
07ProtectNormalStatus — —
08SubstituteNormalStatus — —
09ReflectPsychicStatus — —
12FacadeNormalPhysical 70 100
26Poison JabPoisonPhysical 80 100
27ToxicPoisonStatus — 90
28Tri AttackNormalSpecial 80 100
42Self-DestructNormalPhysical 200 100
47SurfWaterSpecial 90 100
48Hyper BeamNormalSpecial 150 90
51BlizzardIceSpecial 110 70
55Ice BeamIceSpecial 90 100

Cloyster sprites

Type Generation 1 Generation 2 Generation 3 Generation 4 Generation 5 Generation 6 Generation 7 Generation 8
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 Cloyster sprite from Sword & Shield
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, Courageous Cavern, Loop Lagoon

Answers to Cloyster questions

Other languages

English, Spanish, Italian 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