Cloyster
Diamond/PearlPlatinum

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.

Evolution Chain

shellder
Shellder
cloyster
Cloyster

Pokédex & Training Data

Classification Bivalve Pokémon
Height 1.5 m (4'11")
Weight 132.5 kg (292.1 lbs)
EV Yield +2 defense
Catch Rate 60
Base Friendship 70
Growth Rate slow
Gender Ratio
♂ ♀
Egg Groups Water3

Pokédex Numbers

Kanto (R/B/Y) #091
Johto (G/S/C) #170
Johto (HG/SS) #172
Kalos (Coastal) #037
Alola (S/M) #116
Alola (US/UM) #139
Galar (Sw/Sh) #151
Paldea (S/V) #330
National #091
Isle of Armor #132

Held Items

Pearl 50%

Learned Moves

Level Up Moves

Diamond/Pearl
Lvl Name Class Power Acc. PP Effect
1 Supersonic
— 55% 20 Confuses the target.
1 Aurora Beam
65 100% 20 Has a 10% chance to lower the target’s Attack by one stage.
1 Withdraw
— — 40 Raises the user’s Defense by one stage.
1 Protect
— — 10 Prevents any moves from hitting the user this turn.
1 Toxic Spikes
— — 20 Scatters poisoned spikes, poisoning opposing Pokémon that switch in.
28 Spikes
— — 20 Scatters Spikes, hurting opposing Pokémon that switch in.
40 Spike Cannon
20 100% 15 Hits 2-5 times in one turn.
Platinum
Lvl Name Class Power Acc. PP Effect
1 Supersonic
— 55% 20 Confuses the target.
1 Aurora Beam
65 100% 20 Has a 10% chance to lower the target’s Attack by one stage.
1 Withdraw
— — 40 Raises the user’s Defense by one stage.
1 Protect
— — 10 Prevents any moves from hitting the user this turn.
1 Toxic Spikes
— — 20 Scatters poisoned spikes, poisoning opposing Pokémon that switch in.
28 Spikes
— — 20 Scatters Spikes, hurting opposing Pokémon that switch in.
40 Spike Cannon
20 100% 15 Hits 2-5 times in one turn.
HeartGold/SoulSilver
Lvl Name Class Power Acc. PP Effect
1 Supersonic
— 55% 20 Confuses the target.
1 Aurora Beam
65 100% 20 Has a 10% chance to lower the target’s Attack by one stage.
1 Withdraw
— — 40 Raises the user’s Defense by one stage.
1 Protect
— — 10 Prevents any moves from hitting the user this turn.
1 Toxic Spikes
— — 20 Scatters poisoned spikes, poisoning opposing Pokémon that switch in.
28 Spikes
— — 20 Scatters Spikes, hurting opposing Pokémon that switch in.
40 Spike Cannon
20 100% 15 Hits 2-5 times in one turn.

TM/HM Moves

Diamond/PearlPlatinum
Name Class Power Acc. PP Effect
HM03 Surf
90 100% 15 Inflicts regular damage and can hit Dive users.
TM03 Water Pulse
60 100% 20 Has a 20% chance to confuse the target.
TM06 Toxic
— 90% 10 Badly poisons the target, inflicting more damage every turn.
TM07 Hail
— — 10 Changes the weather to a hailstorm for five turns.
TM10 Hidden Power
60 100% 15 Power and type depend upon user’s IVs. Power can range from 30 to 70.
TM13 Ice Beam
90 100% 10 Has a 10% chance to freeze the target.
TM14 Blizzard
110 70% 5 Has a 10% chance to freeze the target.
TM15 Hyper Beam
150 90% 5 User foregoes its next turn to recharge.
TM17 Protect
— — 10 Prevents any moves from hitting the user this turn.
TM18 Rain Dance
— — 5 Changes the weather to rain for five turns.
TM21 Frustration
— 100% 20 Power increases as happiness decreases, up to a maximum of 102.
TM27 Return
— 100% 20 Power increases with happiness, up to a maximum of 102.
TM32 Double Team
— — 15 Raises the user’s evasion by one stage.
TM41 Torment
— 100% 15 Prevents the target from using the same move twice in a row.
TM42 Facade
70 100% 20 Power doubles if user is burned, paralyzed, or poisoned.
TM43 Secret Power
70 100% 20 Has a 30% chance to inflict a status effect which depends upon the terrain.
TM44 Rest
— — 5 User sleeps for two turns, completely healing itself.
TM45 Attract
— 100% 15 Target falls in love if it has the opposite gender, and has a 50% chance to refuse attacking the user.
TM55 Brine
65 100% 10 Has double power against Pokémon that have less than half their max HP remaining.
TM58 Endure
— — 10 Prevents the user’s HP from lowering below 1 this turn.
TM64 Explosion
250 100% 5 User faints.
TM66 Payback
50 100% 10 Power is doubled if the target has already moved this turn.
TM68 Giga Impact
150 90% 5 User foregoes its next turn to recharge.
TM72 Avalanche
60 100% 10 Inflicts double damage if the user takes damage before attacking this turn.
TM78 Captivate
— 100% 20 Lowers the target’s Special Attack by two stages if it’s the opposite gender.
TM82 Sleep Talk
— — 10 Randomly uses one of the user’s other three moves. Only works if the user is sleeping.
TM83 Natural Gift
— 100% 15 Power and type depend on the held berry.
TM84 Poison Jab
80 100% 20 Has a 30% chance to poison the target.
TM87 Swagger
— 85% 15 Raises the target’s Attack by two stages and confuses the target.
TM90 Substitute
— — 10 Transfers 1/4 of the user’s max HP into a doll, protecting the user from further damage or status changes until it breaks.
HeartGold/SoulSilver
Name Class Power Acc. PP Effect
HM03 Surf
90 100% 15 Inflicts regular damage and can hit Dive users.
HM05 Whirlpool
35 85% 15 Prevents the target from leaving battle and inflicts 1/16 its max HP in damage for 2-5 turns.
TM03 Water Pulse
60 100% 20 Has a 20% chance to confuse the target.
TM06 Toxic
— 90% 10 Badly poisons the target, inflicting more damage every turn.
TM07 Hail
— — 10 Changes the weather to a hailstorm for five turns.
TM10 Hidden Power
60 100% 15 Power and type depend upon user’s IVs. Power can range from 30 to 70.
TM13 Ice Beam
90 100% 10 Has a 10% chance to freeze the target.
TM14 Blizzard
110 70% 5 Has a 10% chance to freeze the target.
TM15 Hyper Beam
150 90% 5 User foregoes its next turn to recharge.
TM17 Protect
— — 10 Prevents any moves from hitting the user this turn.
TM18 Rain Dance
— — 5 Changes the weather to rain for five turns.
TM21 Frustration
— 100% 20 Power increases as happiness decreases, up to a maximum of 102.
TM27 Return
— 100% 20 Power increases with happiness, up to a maximum of 102.
TM32 Double Team
— — 15 Raises the user’s evasion by one stage.
TM41 Torment
— 100% 15 Prevents the target from using the same move twice in a row.
TM42 Facade
70 100% 20 Power doubles if user is burned, paralyzed, or poisoned.
TM43 Secret Power
70 100% 20 Has a 30% chance to inflict a status effect which depends upon the terrain.
TM44 Rest
— — 5 User sleeps for two turns, completely healing itself.
TM45 Attract
— 100% 15 Target falls in love if it has the opposite gender, and has a 50% chance to refuse attacking the user.
TM55 Brine
65 100% 10 Has double power against Pokémon that have less than half their max HP remaining.
TM58 Endure
— — 10 Prevents the user’s HP from lowering below 1 this turn.
TM64 Explosion
250 100% 5 User faints.
TM66 Payback
50 100% 10 Power is doubled if the target has already moved this turn.
TM68 Giga Impact
150 90% 5 User foregoes its next turn to recharge.
TM72 Avalanche
60 100% 10 Inflicts double damage if the user takes damage before attacking this turn.
TM78 Captivate
— 100% 20 Lowers the target’s Special Attack by two stages if it’s the opposite gender.
TM82 Sleep Talk
— — 10 Randomly uses one of the user’s other three moves. Only works if the user is sleeping.
TM83 Natural Gift
— 100% 15 Power and type depend on the held berry.
TM84 Poison Jab
80 100% 20 Has a 30% chance to poison the target.
TM87 Swagger
— 85% 15 Raises the target’s Attack by two stages and confuses the target.
TM90 Substitute
— — 10 Transfers 1/4 of the user’s max HP into a doll, protecting the user from further damage or status changes until it breaks.

Tutor Moves

PlatinumHeartGold/SoulSilver
Name Class Power Acc. PP Effect
Dive
80 100% 10 User dives underwater, dodging all attacks, and hits next turn.
Icy Wind
55 95% 15 Has a 100% chance to lower the target’s Speed by one stage.
Iron Defense
— — 15 Raises the user’s Defense by two stages.
Signal Beam
75 100% 15 Has a 10% chance to confuse the target.
Snore
50 100% 15 Has a 30% chance to make the target flinch. Only works if the user is sleeping.
Swift
60 — 20 Never misses.

Base Stats

Hp 50
Attack 95
Defense 180
Sp. Atk 85
Sp. Def 45
Speed 70
Total 525

Type Defenses

(vs. Gen 6+ rules)

0.5x
2x
2x
0.25x
2x
2x