Cloyster
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.

Evolution Chain

shellder
Shellder
water-stone water stone
cloyster
Cloyster

Pokédex Data

Classification Bivalve Pokémon
Height 1.5 m (4'11")
Weight 132.5 kg (292.1 lbs)
Abilities N/A in Gen II

Held Items

None in this generation.

Training

EV Yield +2 defense
Catch Rate 60
Base Friendship 70
Growth Rate slow
Gender Ratio
Egg Groups Water3

Learned Moves

Level Up Moves

Gold/Silver
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.
41 Spike Cannon
20 100% 15 Hits 2-5 times in one turn.
Crystal
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.
33 Spikes
20 Scatters Spikes, hurting opposing Pokémon that switch in.
41 Spike Cannon
20 100% 15 Hits 2-5 times in one turn.

TM/HM Moves

Gold/SilverCrystal
Name Class Power Acc. PP Effect
HM03 Surf
90 100% 15 Inflicts regular damage and can hit Dive users.
HM06 Whirlpool
35 85% 15 Prevents the target from leaving battle and inflicts 1/16 its max HP in damage for 2-5 turns.
TM03 Curse
10 Ghosts pay half their max HP to hurt the target every turn. Others decrease Speed but raise Attack and Defense.
TM06 Toxic
90% 10 Badly poisons the target, inflicting more damage every turn.
TM10 Hidden Power
60 100% 15 Power and type depend upon user's IVs. Power can range from 30 to 70.
TM13 Snore
50 100% 15 Has a 30% chance to make the target flinch. Only works if the user is sleeping.
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.
TM16 Icy Wind
55 95% 15 Has a 100% chance to lower the target's Speed by one stage.
TM17 Protect
10 Prevents any moves from hitting the user this turn.
TM18 Rain Dance
5 Changes the weather to rain for five turns.
TM20 Endure
10 Prevents the user's HP from lowering below 1 this turn.
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.
TM34 Swagger
85% 15 Raises the target's Attack by two stages and confuses the target.
TM35 Sleep Talk
10 Randomly uses one of the user's other three moves. Only works if the user is sleeping.
TM39 Swift
60 20 Never misses.
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.

Tutor Moves

Crystal
Name Class Power Acc. PP Effect
Ice Beam
90 100% 10 Has a 10% chance to freeze the target.

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