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 4′11″ (1.5 m)
Weight 292.1 lbs (132.5 kg)
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)

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 (base 5,120 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.

Moves learned by Cloyster

Moves learnt by level up

Cloyster learns the following moves in Pokémon Ultra Sun & Ultra Moon at the levels specified.

Lv.
Move
Type
Cat.
Power
Acc.
1Aurora BeamIce 65 100
1Hydro PumpWater 110 80
1ProtectNormal
1Shell SmashNormal
1SupersonicNormal 55
1Toxic SpikesPoison
1WithdrawWater
13Spike CannonNormal 20 100
28SpikesGround
50Icicle CrashIce 85 90

Egg moves

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

Move
Type
Cat.
Power
Acc.
Aqua RingWater
AvalancheIce 60 100
BarrierPsychic
Bubble BeamWater 65 100
Icicle SpearIce 25 100
Mud ShotGround 55 95
Rapid SpinNormal 20 100
Rock BlastRock 25 90
ScreechNormal 85
Take DownNormal 90 85
TwineedleBug 25 100
Water PulseWater 60 100

Move Tutor moves

Cloyster can be taught these attacks in Pokémon Ultra Sun & Ultra Moon from move tutors (details):

Move
Type
Cat.
Power
Acc.
Icy WindIce 55 95
Iron DefenseSteel
LiquidationWater 85 100
Signal BeamBug 75 100
SnoreNormal 50 100
Water PulseWater 60 100

Pre-evolution moves

These moves can only be learned in Pokémon Ultra Sun & Ultra Moon by a previous evolution of Cloyster. Check the respective Pokédex for the exact details.

Move
Type
Cat.
Power
Acc.
Method
BrineWater 65 100 Level up
ClampWater 35 85 Level up
Ice BeamIce 90 100 Level up
Ice ShardIce 40 100 Level up
Icicle SpearIce 25 100 Level up
Iron DefenseSteel Level up
LeerNormal 100 Level up
Razor ShellWater 75 95 Level up
TackleNormal 40 100 Level up
Water GunWater 40 100 Level up
WhirlpoolWater 35 85 Level up

Moves learnt by TM

Cloyster is compatible with these Technical Machines in Pokémon Ultra Sun & Ultra Moon:

TM
Move
Type
Cat.
Power
Acc.
6ToxicPoison 90
7HailIce
10Hidden PowerNormal 60 100
13Ice BeamIce 90 100
14BlizzardIce 110 70
15Hyper BeamNormal 150 90
17ProtectNormal
18Rain DanceWater
21FrustrationNormal 100
27ReturnNormal 100
32Double TeamNormal
41TormentDark 100
42FacadeNormal 70 100
44RestPsychic
45AttractNormal 100
48RoundNormal 60 100
64ExplosionNormal 250 100
66PaybackDark 50 100
67Smart StrikeSteel 70
68Giga ImpactNormal 150 90
79Frost BreathIce 60 90
84Poison JabPoison 80 100
87SwaggerNormal 85
88Sleep TalkNormal
90SubstituteNormal
94SurfWater 90 100
100ConfideNormal

Transfer-only moves

Cloyster can only learn these moves in previous generations. It must be taught the moves in the appropriate game and then transferred to Pokémon Ultra Sun & Ultra Moon.
Note: Generation 1 and 2 refer to the 3DS Virtual Console titles, not the physical cartridges.

Move
Type
Cat.
Power
Acc.
Method
BideNormal Generation 1 — TM
RageNormal 20 100 Generation 1 — TM
ReflectPsychic Generation 1 — TM
Self-DestructNormal 200 100 Generation 1 — TM
TeleportPsychic Generation 1 — TM
Tri AttackNormal 80 100 Generation 1 — TM
CurseGhost Generation 2 — TM
Double-EdgeNormal 120 100 Generation 3 — Move tutor
MimicNormal Generation 3 — Move tutor
CaptivateNormal 100 Generation 4 — TM
EndureNormal Generation 4 — TM
Natural GiftNormal 100 Generation 4 — TM
SwiftNormal 60 Generation 4 — Move tutor
Secret PowerNormal 70 100 Generation 6 — TM
DiveWater 80 100 Generation 6 — HM

Moves learnt by level up

Cloyster learns the following moves in Pokémon Sun & Moon at the levels specified.

Lv.
Move
Type
Cat.
Power
Acc.
1Aurora BeamIce 65 100
1Hydro PumpWater 110 80
1ProtectNormal
1Shell SmashNormal
1SupersonicNormal 55
1Toxic SpikesPoison
1WithdrawWater
13Spike CannonNormal 20 100
28SpikesGround
50Icicle CrashIce 85 90

Egg moves

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

Move
Type
Cat.
Power
Acc.
Aqua RingWater
AvalancheIce 60 100
BarrierPsychic
Bubble BeamWater 65 100
Icicle SpearIce 25 100
Mud ShotGround 55 95
Rapid SpinNormal 20 100
Rock BlastRock 25 90
ScreechNormal 85
Take DownNormal 90 85
TwineedleBug 25 100
Water PulseWater 60 100

Pre-evolution moves

These moves can only be learned in Pokémon Sun & Moon by a previous evolution of Cloyster. Check the respective Pokédex for the exact details.

Move
Type
Cat.
Power
Acc.
Method
BrineWater 65 100 Level up
ClampWater 35 85 Level up
Ice BeamIce 90 100 Level up
Ice ShardIce 40 100 Level up
Icicle SpearIce 25 100 Level up
Iron DefenseSteel Level up
LeerNormal 100 Level up
Razor ShellWater 75 95 Level up
TackleNormal 40 100 Level up
Water GunWater 40 100 Level up
WhirlpoolWater 35 85 Level up

Moves learnt by TM

Cloyster is compatible with these Technical Machines in Pokémon Sun & Moon:

TM
Move
Type
Cat.
Power
Acc.
6ToxicPoison 90
7HailIce
10Hidden PowerNormal 60 100
13Ice BeamIce 90 100
14BlizzardIce 110 70
15Hyper BeamNormal 150 90
17ProtectNormal
18Rain DanceWater
21FrustrationNormal 100
27ReturnNormal 100
32Double TeamNormal
41TormentDark 100
42FacadeNormal 70 100
44RestPsychic
45AttractNormal 100
48RoundNormal 60 100
64ExplosionNormal 250 100
66PaybackDark 50 100
67Smart StrikeSteel 70
68Giga ImpactNormal 150 90
79Frost BreathIce 60 90
84Poison JabPoison 80 100
87SwaggerNormal 85
88Sleep TalkNormal
90SubstituteNormal
94SurfWater 90 100
100ConfideNormal

Transfer-only moves

Cloyster can only learn these moves in previous generations. It must be taught the moves in the appropriate game and then transferred to Pokémon Sun & Moon.
Note: Generation 1 and 2 refer to the 3DS Virtual Console titles, not the physical cartridges.

Move
Type
Cat.
Power
Acc.
Method
BideNormal Generation 1 — TM
RageNormal 20 100 Generation 1 — TM
ReflectPsychic Generation 1 — TM
Self-DestructNormal 200 100 Generation 1 — TM
TeleportPsychic Generation 1 — TM
Tri AttackNormal 80 100 Generation 1 — TM
CurseGhost Generation 2 — TM
Double-EdgeNormal 120 100 Generation 3 — Move tutor
MimicNormal Generation 3 — Move tutor
CaptivateNormal 100 Generation 4 — TM
EndureNormal Generation 4 — TM
Natural GiftNormal 100 Generation 4 — TM
SwiftNormal 60 Generation 4 — Move tutor
Secret PowerNormal 70 100 Generation 6 — TM
DiveWater 80 100 Generation 6 — HM

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

Other languages

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

Name origin

clam
marine creature
oyster
marine creature
cloister
isolated religious building