Cloyster
#170 in the Gold and Silver Pokédex • Bivalve Pokémon
Pokémon Gold
Once it slams its shell shut, it is impossible to open, even by those with superi or strength.
Pokémon Silver
CLOYSTER that live in seas with harsh tidal currents grow large, sharp spikes on their shells.
Pokédexes
Egg Group
Steps to Hatch
Effort Values Yielded
Gender Ratio
Capture Rate
Base Experience
| Pokémon | Requires | Evolution |
|---|---|---|
 Shellder #169 |  Use Water Stone |  Cloyster #170 |
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| Start | Supersonic |  |  Status | - | 55 | 20 | Sound waves that cause confusion. |
| Start | Aurora Beam |  |  Special | 65 | 100 | 20 | An attack that may lower ATTACK. |
| Start | Withdraw |  | Status | - | - | 40 | Heightens the user's DEFENSE. |
| Start | Protect | | Status | - | - | 10 | Foils attack that turn. It may fail. |
| 41 | Spike Cannon | |  Physical | 20 | 100 | 15 | Fires spikes to hit 2-5 times. |
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| HM03 | Surf | | Special | 95 | 100 | 15 | A strong water- type attack. |
| HM06 | Whirlpool | | Special | 15 | 70 | 15 | Traps the foe for 2-5 turns. |
| TM03 | Curse |  | Status | - | - | 10 | Works differently for ghost-types. |
| TM06 | Toxic |  | Status | - | 85 | 10 | A poison move with increasing damage. |
| TM10 | Hidden Power | | Special | 1 | 100 | 15 | The power varies with the Pokémon. |
| TM13 | Snore | | Special | 40 | 100 | 15 | An attack useable only while asleep. |
| TM14 | Blizzard | | Special | 120 | 70 | 5 | An attack that may freeze the foe. |
| TM15 | Hyper Beam | | Special | 150 | 90 | 5 | 1st turn: Attack 2nd turn: Rest |
| TM16 | Icy Wind | | Special | 55 | 95 | 15 | An icy attack that lowers SPEED. |
| TM17 | Protect | | Status | - | - | 10 | Foils attack that turn. It may fail. |
| TM18 | Rain Dance | | Status | - | - | 5 | Boosts water-type moves for 5 turns. |
| TM20 | Endure | | Status | - | - | 10 | Always leaves at least 1HP. |
| TM21 | Frustration | | Physical | - | 100 | 20 | An attack based on lack of loyalty. |
| TM27 | Return | | Physical | - | 100 | 20 | An attack that is based on loyalty. |
| TM32 | Double Team | | Status | - | - | 15 | Heightens evasive ness. |
| TM34 | Swagger | | Status | - | 90 | 15 | Causes confusion and raises ATTACK. |
| TM35 | Sleep Talk | | Status | - | - | 10 | Randomly attacks while asleep. |
| TM39 | Swift | | Special | 60 | - | 20 | An attack that never misses. |
| TM44 | Rest |  | Status | - | - | 5 | Sleep for 2 turns to fully recover. |
| TM45 | Attract | | Status | - | 100 | 15 | Makes the opposite gender infatuated. |