Cloyster
#139 in the Ultra Sun & Ultra Moon Pokédex • Bivalve Pokémon
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.
Pokédexes
Egg Group
Steps to Hatch
Effort Values Yielded
Gender Ratio
Capture Rate
Base Experience
| Pokémon | Requires | Evolution |
|---|---|---|
 Shellder #138 |  Use Water Stone |  Cloyster #139 |
Normal
Shiny
Cloyster
Bivalve Pokémon
HP
50
Attack
95
Defense
180
Sp. Atk
85
Sp. Def
45
Speed
70
Total
525
Type Chart
Weaknesses
Takes 2× from
Resistances
Takes 0.25× from
Takes 0.5× from
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| Start | Supersonic |  |  Status | - | 55 | 20 | The user generates odd sound waves from its body that confuse the target. |
| Start | Hydro Pump | |  Special | 110 | 80 | 5 | The target is blasted by a huge volume of water launched under great pressure. |
| Start | Aurora Beam | | Special | 65 | 100 | 20 | The target is hit with a rainbow-colored beam. This may also lower the target’s Attack stat. |
| Start | Withdraw | | Status | - | - | 40 | The user withdraws its body into its hard shell, raising its Defense stat. |
| Start | Protect | | Status | - | - | 10 | Enables the user to evade all attacks. Its chance of failing rises if it is used in succession. |
| Start | Toxic Spikes |  | Status | - | - | 20 | The user lays a trap of poison spikes at the feet of the opposing team. The spikes will poison opposing Pokémon that switch into battle. |
| Start | Shell Smash | | Status | - | - | 15 | The user breaks its shell, which lowers Defense and Sp. Def stats but sharply raises its Attack, Sp. Atk, and Speed stats. |
| 13 | Spike Cannon | |  Physical | 20 | 100 | 15 | Sharp spikes are shot at the target in rapid succession. They hit two to five times in a row. |
| 28 | Spikes |  | Status | - | - | 20 | The user lays a trap of spikes at the opposing team’s feet. The trap hurts Pokémon that switch into battle. |
| 50 | Icicle Crash | | Physical | 85 | 90 | 10 | The user attacks by harshly dropping large icicles onto the target. This may also make the target flinch. |
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| TM06 | Toxic | | Status | - | 90 | 10 | A move that leaves the target badly poisoned. Its poison damage worsens every turn. |
| TM07 | Hail | | Status | - | - | 10 | The user summons a hailstorm lasting five turns. It damages all Pokémon except the Ice type. |
| TM10 | Hidden Power | | Special | 60 | 100 | 15 | A unique attack that varies in type depending on the Pokémon using it. |
| TM13 | Ice Beam | | Special | 90 | 100 | 10 | The target is struck with an icy-cold beam of energy. This may also leave the target frozen. |
| TM14 | Blizzard | | Special | 110 | 70 | 5 | A howling blizzard is summoned to strike opposing Pokémon. This may also leave the opposing Pokémon frozen. |
| TM15 | Hyper Beam | | Special | 150 | 90 | 5 | The target is attacked with a powerful beam. The user can’t move on the next turn. |
| TM17 | Protect | | Status | - | - | 10 | Enables the user to evade all attacks. Its chance of failing rises if it is used in succession. |
| TM18 | Rain Dance | | Status | - | - | 5 | The user summons a heavy rain that falls for five turns, powering up Water-type moves. It lowers the power of Fire-type moves. |
| TM21 | Frustration | | Physical | - | 100 | 20 | This full-power attack grows more powerful the less the user likes its Trainer. |
| TM27 | Return | | Physical | - | 100 | 20 | This full-power attack grows more powerful the more the user likes its Trainer. |
| TM32 | Double Team | | Status | - | - | 15 | By moving rapidly, the user makes illusory copies of itself to raise its evasiveness. |
| TM41 | Torment |  | Status | - | 100 | 15 | The user torments and enrages the target, making it incapable of using the same move twice in a row. |
| TM42 | Facade | | Physical | 70 | 100 | 20 | This attack move doubles its power if the user is poisoned, burned, or paralyzed. |
| TM44 | Rest |  | Status | - | - | 5 | The user goes to sleep for two turns. This fully restores the user’s HP and heals any status conditions. |
| TM45 | Attract | | Status | - | 100 | 15 | If it is the opposite gender of the user, the target becomes infatuated and less likely to attack. |
| TM48 | Round | | Special | 60 | 100 | 15 | The user attacks the target with a song. Others can join in the Round to increase the power of the attack. |
| TM64 | Explosion | | Physical | 250 | 100 | 5 | The user attacks everything around it by causing a tremendous explosion. The user faints upon using this move. |
| TM66 | Payback | | Physical | 50 | 100 | 10 | The user stores power, then attacks. If the user moves after the target, this attack’s power will be doubled. |
| TM67 | Smart Strike |  | Physical | 70 | - | 10 | The user stabs the target with a sharp horn. This attack never misses. |
| TM68 | Giga Impact | | Physical | 150 | 90 | 5 | The user charges at the target using every bit of its power. The user can’t move on the next turn. |
| TM79 | Frost Breath | | Special | 60 | 90 | 10 | The user blows its cold breath on the target. This attack always results in a critical hit. |
| TM84 | Poison Jab | | Physical | 80 | 100 | 20 | The target is stabbed with a tentacle or arm steeped in poison. This may also poison the target. |
| TM87 | Swagger | | Status | - | 85 | 15 | The user enrages and confuses the target. However, this also sharply raises the target’s Attack stat. |
| TM88 | Sleep Talk | | Status | - | - | 10 | While it is asleep, the user randomly uses one of the moves it knows. |
| TM90 | Substitute | | Status | - | - | 10 | The user makes a copy of itself using some of its HP. The copy serves as the user’s decoy. |
| TM94 | Surf | | Special | 90 | 100 | 15 | The user attacks everything around it by swamping its surroundings with a giant wave. |
| TM100 | Confide | | Status | - | - | 20 | The user tells the target a secret, and the target loses its ability to concentrate. This lowers the target’s Sp. Atk stat. |
| Class | Description | |||||
|---|---|---|---|---|---|---|
| Icy Wind | | Special | 55 | 95 | 15 | The user attacks with a gust of chilled air. This also lowers the opposing Pokémon’s Speed stats. |
| Iron Defense | | Status | - | - | 15 | The user hardens its body’s surface like iron, sharply raising its Defense stat. |
| Liquidation | | Physical | 85 | 100 | 10 | The user slams into the target using a full-force blast of water. This may also lower the target’s Defense stat. |
| Signal Beam |  | Special | 75 | 100 | 15 | The user attacks with a sinister beam of light. This may also confuse the target. |
| Snore | | Special | 50 | 100 | 15 | This attack can be used only if the user is asleep. The harsh noise may also make the target flinch. |
| Water Pulse | | Special | 60 | 100 | 20 | The user attacks the target with a pulsing blast of water. This may also confuse the target. |
Shell Armor
Ability Slot 1
A hard shell protects the Pokémon from critical hits.
Protects against critical hits.
Skill Link
Ability Slot 2
Maximizes the number of times multi-strike moves hit.
Extends two-to-five-hit moves and Triple Kick to their full length every time.
Overcoat
Hidden Ability
Protects the Pokémon from things like sand, hail, and powder.
Protects against damage from weather.