Cloyster Pokédex: Stats, Weaknesses, Evolution and Moves

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 Pokédex brings together the essential information for Cloyster, including its typing, weaknesses, base stats, abilities, evolution line, forms, Pokédex entries and appearances across Pokémon games. Cloyster is National Pokédex #91 and was introduced in Generation I. It is a Water and Ice-type Pokémon.

This Cloyster Pokédex covers Cloyster across the Pokémon series rather than focusing on one game. You can use it to check core stats, weaknesses, evolution, forms, moves, locations and game appearances, then follow the related guides for more detailed game-specific help. Its shell is extremely hard. It cannot be shattered, even with a bomb. The shell opens only when it is attacking.

Cloyster at a glance

Type
WATERICE
Weak to
ELECTRIC2×GRASS2×FIGHTING2×ROCK2×
Best base stat
Defense — 180
Abilities
Shell Armor, Skill Link, Overcoat (Hidden)
Evolution
Final stage or no evolution data

Cloyster Pokédex overview

Cloyster has the Water and Ice typing, it belongs to Generation I, its Pokédex classification is the Bivalve Pokémon. Its shell is extremely hard. It cannot be shattered, even with a bomb. The shell opens only when it is attacking. The quick facts below bring together the key measurements and species details, while the rest of the Cloyster Pokédex breaks down its battle strengths, evolution, forms and appearances in more detail.

Cloyster quick facts

Height
1.5 m
Weight
132.5 kg
Generation
Generation I
Growth rate
Slow
Capture rate
60
Base happiness
70

Cloyster Pokédex type and weaknesses

Cloyster is weak to Electric, Grass, Fighting and Rock. It resists Ice and Water. These matchups come from Cloyster's typing, making this a quick way to check which attacking types are super effective against Cloyster and which types it can resist more comfortably.

Cloyster type effectiveness

Damage taken when Cloyster is hit by each type:

Weak to

ELECTRIC2×GRASS2×FIGHTING2×ROCK2×

Resists

WATER½×

Strongly resists

ICE¼×

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

Cloyster Pokédex stats

Cloyster has a base stat total of 525, with Defense as its highest listed base stat at 180. In the Cloyster Pokédex, base stats are useful for comparing natural strengths before a particular game layers on level, training, moves, abilities or battle formats. The bars below show the six standard stats side by side, making it easier to see where Cloyster is naturally strongest and where its lower base values sit.

Cloyster base stats

Hp50
Attack95
Defense180
Special Attack85
Special Defense45
Speed70
Total525

Cloyster Pokédex abilities

Cloyster can have Shell Armor, Skill Link and Overcoat as its Hidden Ability. Abilities can significantly change how Cloyster functions in battle, so they are worth considering alongside its typing and base stats. Any Hidden Ability is identified separately below.

Cloyster abilities

Shell Armor

Protects against critical hits.

Skill Link

Extends two-to-five-hit moves and Triple Kick to their full length every time.

Overcoat Hidden

Protects against damage from weather.

Cloyster Pokédex evolution

Cloyster evolves from Shellder. The evolution section shows the family together and includes evolution requirements where they apply, making it easy to see how each stage connects. Each Pokémon in the family can also be opened in its own Pokédex guide.

Cloyster evolution family

90Shellder
Use Item · Water Stone
91Cloyster

Cloyster evolution requirements

Evolves from

Shellder

Use Item · Water Stone

Cloyster Pokédex forms and shiny appearance

Cloyster has 1 form shown on this Cloyster Pokédex page. Alternate forms are grouped together so you can compare them in one place, while the artwork switcher lets you view the standard and shiny appearance when shiny artwork is available.

Cloyster normal artwork
Switch between the normal and shiny appearance of Cloyster.

Cloyster Pokédex game appearances

Cloyster appears in 26 Pokémon titles, including Black, Black 2, Blue, Crystal, Diamond and Emerald. Availability differs between games, so the list below separates each title and makes it easier to see where Cloyster appears without assuming the same method or location applies everywhere.

Cloyster game availability

BlackWild encounter
Black 2Wild encounter
BlueGame data
CrystalGame data
DiamondGame data
EmeraldGame data
FireredGame data
GoldGame data
HeartgoldGame data
LeafgreenGame data
Lets Go EeveeWild encounter
Lets Go PikachuWild encounter
PearlGame data
PlatinumGame data
RedGame data
RubyGame data
SapphireGame data
ShieldWild encounter
SilverGame data
SoulsilverGame data
SwordWild encounter
WhiteWild encounter
White 2Wild encounter
XWild encounter
YWild encounter
YellowGame data

This uses imported PokéAPI encounter and game-index records. It does not guarantee current transfer, DLC or event availability.

Where can you find Cloyster?

The locations below show where Cloyster can be found across Pokémon games, including the encounter method, level range and encounter chance where available. Use the filters to narrow the list to a particular game and find the location information you need.

Cloyster encounter locations

41 records

GameLocationMethodLevelChanceConditions
BlackUndella Bay AreaSuper Rod Spots45–704%—
BlackUndella Town AreaSuper Rod Spots45–704%—
BlackUnova Route 13 AreaSuper Rod Spots45–704%—
Black 2Humilau City AreaSuper Rod Spots50–704%—
Black 2Seaside Cave 1fSuper Rod Spots50–704%—
Black 2Undella Town AreaSuper Rod Spots50–704%—
Black 2Unova Route 13 AreaSuper Rod Spots50–704%—
Lets Go EeveeSeafoam Islands B3fOverworld Water39–44100%—
Lets Go EeveeSeafoam Islands B4fOverworld Water39–44100%—
Lets Go PikachuSeafoam Islands B3fOverworld Water39–44100%—
Lets Go PikachuSeafoam Islands B4fOverworld Water39–44100%—
ShieldEast Lake Axewell AreaOverworld Water Special46100%Weather Normal, Story Progress Before Hall Of ♀ame
ShieldEast Lake Axewell AreaOverworld Water Special46100%Weather ♀og, Story Progress Before Hall Of ♀ame
ShieldEast Lake Axewell AreaOverworld Water Special60100%Weather Normal, Story Progress Hall Of ♀ame
ShieldEast Lake Axewell AreaOverworld Water Special60100%Weather ♀og, Story Progress Hall Of ♀ame
ShieldGiants Seat AreaBubbling Spots30–355%Story Progress Before Hall Of ♀ame
ShieldGiants Seat AreaBubbling Spots605%Story Progress Hall Of ♀ame
ShieldWest Lake Axewell AreaOverworld Water Special46100%Weather Normal, Story Progress Before Hall Of ♀ame
ShieldWest Lake Axewell AreaOverworld Water Special46100%Weather ♀og, Story Progress Before Hall Of ♀ame
ShieldWest Lake Axewell AreaOverworld Water Special60100%Weather Normal, Story Progress Hall Of ♀ame
ShieldWest Lake Axewell AreaOverworld Water Special60100%Weather ♀og, Story Progress Hall Of ♀ame
SwordEast Lake Axewell AreaOverworld Water Special46100%Weather Normal, Story Progress Before Hall Of ♀ame
SwordEast Lake Axewell AreaOverworld Water Special46100%Weather ♀og, Story Progress Before Hall Of ♀ame
SwordEast Lake Axewell AreaOverworld Water Special60100%Weather Normal, Story Progress Hall Of ♀ame
SwordEast Lake Axewell AreaOverworld Water Special60100%Weather ♀og, Story Progress Hall Of ♀ame
SwordGiants Seat AreaBubbling Spots30–355%Story Progress Before Hall Of ♀ame
SwordGiants Seat AreaBubbling Spots605%Story Progress Hall Of ♀ame
SwordWest Lake Axewell AreaOverworld Water Special46100%Weather Normal, Story Progress Before Hall Of ♀ame
SwordWest Lake Axewell AreaOverworld Water Special46100%Weather ♀og, Story Progress Before Hall Of ♀ame
SwordWest Lake Axewell AreaOverworld Water Special60100%Weather Normal, Story Progress Hall Of ♀ame
SwordWest Lake Axewell AreaOverworld Water Special60100%Weather ♀og, Story Progress Hall Of ♀ame
WhiteUndella Bay AreaSuper Rod Spots45–704%—
WhiteUndella Town AreaSuper Rod Spots45–704%—
WhiteUnova Route 13 AreaSuper Rod Spots45–704%—
White 2Humilau City AreaSuper Rod Spots50–704%—
White 2Seaside Cave 1fSuper Rod Spots50–704%—
White 2Undella Town AreaSuper Rod Spots50–704%—
White 2Unova Route 13 AreaSuper Rod Spots50–704%—
XFriend Safari IceWalk3033%Friend Safari Slot 3
YFriend Safari IceWalk3033%Friend Safari Slot 3
YKalos Route 8 AreaSuper Rod355%—

Cloyster Pokédex moves

The Cloyster Pokédex lists 114 moves below. Use the filters to narrow the list by move name, learning method, type or category. Move availability can differ between games and generations, so check the relevant game details when planning a specific moveset.

Cloyster move explorer

114 moves shown

LevelMoveTypeCategoryPowerAccuracyPPMethod
—Icicle SpearICEPhysical2510030Level Up
—Spike CannonNORMALPhysical2010015Level Up
1Aurora BeamICESpecial6510020Level Up
1BarrierPSYCHICStatus——20Level Up
1ClampWATERPhysical358515Level Up
1Hydro PumpWATERSpecial110805Level Up
1Ice BeamICESpecial9010010Level Up
1Ice ShardICEPhysical4010030Level Up
1Icicle CrashICEPhysical859010Level Up
1Iron DefenseSTEELStatus——15Level Up
1LeerNORMALStatus—10030Level Up
1ProtectNORMALStatus——10Level Up
1Razor ShellWATERPhysical759510Level Up
1Shell SmashNORMALStatus——15Level Up
1SpikesGROUNDStatus——20Level Up
1SupersonicNORMALStatus—5520Level Up
1TackleNORMALPhysical4010035Level Up
1Toxic SpikesPOISONStatus——20Level Up
1TwineedleBUGPhysical2510020Level Up
1Water GunWATERSpecial4010025Level Up
1WhirlpoolWATERSpecial358515Level Up
1WithdrawWATERStatus——40Level Up
—AttractNORMALStatus—10015Machine
—AvalancheICEPhysical6010010Machine
—BideNORMALPhysical——10Machine
—BlizzardICESpecial110705Machine
—Body SlamNORMALPhysical8510015Machine
—BrineWATERSpecial6510010Machine
—Bubble BeamWATERSpecial6510020Machine
—CaptivateNORMALStatus—10020Machine
—Chilling WaterWATERSpecial5010020Machine
—ConfideNORMALStatus——20Machine
—CurseGHOSTStatus——10Machine
—DiveWATERPhysical8010010Machine
—Double EdgeNORMALPhysical12010015Machine
—Double TeamNORMALStatus——15Machine
—Drill RunGROUNDPhysical809510Machine
—EndureNORMALStatus——10Machine
—ExplosionNORMALPhysical2501005Machine
—FacadeNORMALPhysical7010020Machine
—Frost BreathICESpecial609010Machine
—FrustrationNORMALPhysical—10020Machine
—Giga ImpactNORMALPhysical150905Machine
—HailICEStatus——10Machine
—HeadbuttNORMALPhysical7010015Machine
—Helping HandNORMALStatus——20Machine
—Hidden PowerNORMALSpecial6010015Machine
—Hydro PumpWATERSpecial110805Machine
—Hyper BeamNORMALSpecial150905Machine
—Ice BeamICESpecial9010010Machine
—Ice SpinnerICEPhysical8010015Machine
—Icicle SpearICEPhysical2510030Machine
—Icy WindICESpecial559515Machine
—Iron DefenseSTEELStatus——15Machine
—Light ScreenPSYCHICStatus——30Machine
—LiquidationWATERPhysical8510010Machine
—MimicNORMALStatus——10Machine
—Mud ShotGROUNDSpecial559515Machine
—Natural GiftNORMALPhysical—10015Machine
—PaybackDARKPhysical5010010Machine
—Pin ♂issileBUGPhysical259520Machine
—Poison JabPOISONPhysical8010020Machine
—ProtectNORMALStatus——10Machine
—RageNORMALPhysical2010020Machine
—Rain DanceWATERStatus——5Machine
—Razor ShellWATERPhysical759510Machine
—ReflectPSYCHICStatus——20Machine
—RestPSYCHICStatus——5Machine
—ReturnNORMALPhysical—10020Machine
—Rock BlastROCKPhysical259010Machine
—RoundNORMALSpecial6010015Machine
—Scary ♀aceNORMALStatus—10010Machine
—ScreechNORMALStatus—8540Machine
—Secret PowerNORMALPhysical7010020Machine
—Self DestructNORMALPhysical2001005Machine
—Sleep TalkNORMALStatus——10Machine
—Smart StrikeSTEELPhysical70—10Machine
—SnoreNORMALSpecial5010015Machine
—SnowscapeICEStatus0—10Machine
—SpikesGROUNDStatus——20Machine
—SubstituteNORMALStatus——10Machine
—SurfWATERSpecial9010015Machine
—SwaggerNORMALStatus—8515Machine
—SwiftNORMALSpecial60—20Machine
—Take DownNORMALPhysical908520Machine
—TeleportPSYCHICStatus——20Machine
—Tera BlastNORMALSpecial8010010Machine
—TormentDARKStatus—10015Machine
—ToxicPOISONStatus—9010Machine
—Toxic SpikesPOISONStatus——20Machine
—Tri AttackNORMALSpecial8010010Machine
—Water GunWATERSpecial4010025Machine
—Water PulseWATERSpecial6010020Machine
—WaterfallWATERPhysical8010015Machine
—Weather BallNORMALSpecial5010010Machine
—WhirlpoolWATERSpecial358515Machine
—DiveWATERPhysical8010010Tutor
—Double EdgeNORMALPhysical12010015Tutor
—EndureNORMALStatus——10Tutor
—ExplosionNORMALPhysical2501005Tutor
—Ice BeamICESpecial9010010Tutor
—Icy WindICESpecial559515Tutor
—Iron DefenseSTEELStatus——15Tutor
—LiquidationWATERPhysical8510010Tutor
—MimicNORMALStatus——10Tutor
—Self DestructNORMALPhysical2001005Tutor
—Signal BeamBUGSpecial7510015Tutor
—Sleep TalkNORMALStatus——10Tutor
—SnoreNORMALSpecial5010015Tutor
—Steel RollerSTEELPhysical1301005Tutor
—SubstituteNORMALStatus——10Tutor
—SwaggerNORMALStatus—8515Tutor
—SwiftNORMALSpecial60—20Tutor
—Water PulseWATERSpecial6010020Tutor

Cloyster Pokédex entries

The Cloyster Pokédex entries below let you compare how Cloyster has been described across different Pokémon games. Pokédex wording often changes between versions, so reading the entries together is a useful way to see how its description has evolved across the series.

Cloyster Pokédex entries

GameEntry
Red

When attacked, it launches its horns in quick volleys. Its innards have never been seen.

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 superi­ or 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 hard­ er than its shell.

Ruby

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.

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.

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.

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.

Diamond

It fights by keeping its shell tightly shut for protection and by shooting spikes to repel foes.

Pearl

It fights by keeping its shell tightly shut for protection and by shooting spikes to repel foes.

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

It fights by keeping its shell tightly shut for protection and by shooting spikes to repel foes.

White

It fights by keeping its shell tightly shut for protection and by shooting spikes to repel foes.

Black 2

It fights by keeping its shell tightly shut for protection and by shooting spikes to repel foes.

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

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.

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 ♂oon

Slowpoke tails are its favorite food. It has even been known to come up on land to look for Slowpoke from time to time.

Lets Go Pikachu

For protection, it uses its harder-than-diamond shell. It also shoots spikes from the shell.

Lets Go Eevee

For protection, it uses its harder-than-diamond 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.

Browse the Pokémon Pokédex to explore more species, or visit Pokémon.com for official Pokémon news and franchise information.

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