Essentials
Abilities
- Shell Armor
Protects against critical hits.
- Skill Link
Extends two-to-five-hit moves and Triple Kick to their full length every time.
Hidden Ability
- Overcoat
Protects against damage from weather.
Damage Taken
Pokédex Numbers
- Introduced in

- National
- 90
- Kanto
-
90




- Original Johto
-
169


- Updated Johto
-
171

Names
- German

- Muschas
- Chinese

- 大舌貝
- Korean

- 셀러
- French

- Kokiyas
- Japanese

- シェルダー (sherudaa)
- Official roomaji

- Shellder
Breeding
Compatibility
Evolution
| Baby | Basic | Stage 1 | Stage 2 |
|---|---|---|---|
| Shellder | Cloyster Use a Water Stone |
Stats
| Pctile | Min IVs | Max IVs | ||
|---|---|---|---|---|
| HP | 2.6 | 233 | 264 | |
| Attack | 38.9 | 198 | 229 | |
| Defense | 85.4 | 268 | 299 | |
| Special Attack | 23.5 | 158 | 189 | |
| Special Defense | 1.8 | 118 | 149 | |
| Speed | 18.8 | 148 | 179 | |
| Total | 18.4 |

Pokéathlon Performance
Minimum;
Base;
Maximum
- Speed



- Power



- Skill


- Stamina




- Jump


- Total
- 7/12/14
Flavor
Flavor Text

-



It swims backward by opening and closing its two shells. Its large tongue is always kept hanging out.

It swims facing backward by opening and closing its two-piece shell. It is surprisingly fast.

Grains of sand trapped in its shells mix with its body fluids to form beautiful pearls.

-




It swims backward by opening and closing its two shells. Its large tongue is always kept hanging out.
Sprites
Height
0'11.8"
0.3 m
Weight
8.8 lb
4.0 kg
Locations
- Red

-
- Blue

- Yellow

- FireRed

- Diamond

- Pearl

- Platinum

- HeartGold

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- SoulSilver

-
- Black

- White

- Black 2

- White 2

Pal Park
- Area
- Sea
- Score
- 50
- Rate
- 30
Moves
Water moves get STAB, and have their type highlighted in green.
Physical moves better suit Shellder's higher Attack, and have their class highlighted in green.
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Move | Type | Class | PP | Power | Acc | Pri | Effect |
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| Level up: Learned when a Pokémon reaches a certain level. | ||||||||||||||
| — | — | — | — | — | — | — | Tackle | ![]() |
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35 | 50 | 100% | Inflicts regular damage with no additional effect. |
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| — | — | — | — | 4 | 4 | 4 | Withdraw | ![]() |
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40 | — | — | Raises the user's Defense by one stage. |
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| 18 | 9 | 9 | 8 | 8 | 8 | Supersonic | ![]() |
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20 | — | 55% | Confuses the target. |
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| 8 | 13 | 13 | 13 | Icicle Spear | ![]() |
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30 | 25 | 100% | Hits 2-5 times in one turn. |
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| 16 | 16 | 16 | Protect | ![]() |
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10 | — | — | 4 | Prevents any moves from hitting the user this turn. |
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| 20 | 20 | 20 | Leer | ![]() |
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30 | — | 100% | Lowers the target's Defense by one stage. |
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| 15 | Supersonic | ![]() |
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20 | — | 55% | Confuses the target. |
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| 23 | 25 | 25 | 25 | Clamp | ![]() |
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15 | 35 | 85% | Prevents the target from fleeing and inflicts damage for 2-5 turns. |
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| 28 | 28 | 28 | Ice Shard | ![]() |
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30 | 40 | 100% | 1 | Inflicts regular damage with no additional effect. |
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| 32 | Razor Shell | ![]() |
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10 | 75 | 95% | Has a 50% chance to lower the target's Defense by one stage. |
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| 30 | 17 | 17 | 22 | 32 | 32 | 37 | Aurora Beam | ![]() |
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20 | 65 | 100% | Has a 10% chance to lower the target's Attack by one stage. |
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| 37 | 37 | 40 | Whirlpool | ![]() |
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15 | 35 | 85% | Prevents the target from leaving battle and inflicts 1/16 its max HP in damage for 2-5 turns. |
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| 40 | 40 | Iron Defense | ![]() |
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15 | — | — | Raises the user's Defense by two stages. |
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| 44 | 44 | 44 | Brine | ![]() |
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10 | 65 | 100% | Has double power against Pokémon that have less than half their max HP remaining. |
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| 49 | Iron Defense | ![]() |
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15 | — | — | Raises the user's Defense by two stages. |
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| 25 | 25 | 29 | Protect | ![]() |
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10 | — | — | 4 | Prevents any moves from hitting the user this turn. |
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| 39 | 33 | 33 | 36 | Leer | ![]() |
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30 | — | 100% | Lowers the target's Defense by one stage. |
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| 41 | 41 | 43 | Clamp | ![]() |
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15 | 35 | 85% | Prevents the target from fleeing and inflicts damage for 2-5 turns. |
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| 50 | 49 | 49 | 50 | 49 | 49 | 52 | Ice Beam | ![]() |
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10 | 95 | 100% | Has a 10% chance to freeze the target. |
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| 56 | Shell Smash | ![]() |
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15 | — | — | Raises user's Attack, Special Attack, and Speed by two stages. Lower user's Defense and Special Defense by one stage. |
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| 61 | Hydro Pump | ![]() |
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5 | 120 | 80% | Inflicts regular damage with no additional effect. |
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Move | Type | Class | PP | Power | Acc | Pri | Effect |
| Egg: Appears on a newly-hatched Pokémon, if the father had the same move. | ||||||||||||||
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Aqua Ring | ![]() |
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20 | — | — | Restores 1/16 of the user's max HP each turn. |
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Avalanche | ![]() |
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10 | 60 | 100% | -4 | Inflicts double damage if the user takes damage before attacking this turn. |
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Barrier | ![]() |
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30 | — | — | Raises the user's Defense by two stages. |
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BubbleBeam | ![]() |
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20 | 65 | 100% | Has a 10% chance to lower the target's Speed by one stage. |
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Icicle Spear | ![]() |
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30 | 25 | 100% | Hits 2-5 times in one turn. |
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Mud Shot | ![]() |
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15 | 55 | 95% | Has a 100% chance to lower the target's Speed by one stage. |
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Rapid Spin | ![]() |
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40 | 20 | 100% | Frees the user from binding moves, removes Leech Seed, and blows away Spikes. |
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Rock Blast | ![]() |
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10 | 25 | 90% | Hits 2-5 times in one turn. |
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Screech | ![]() |
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40 | — | 85% | Lowers the target's Defense by two stages. |
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Take Down | ![]() |
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20 | 90 | 85% | User receives 1/4 the damage it inflicts in recoil. |
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Twineedle | ![]() |
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20 | 25 | 100% | Hits twice in the same turn. Has a 20% chance to poison the target. |
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Water Pulse | ![]() |
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20 | 60 | 100% | Has a 20% chance to confuse the target. |
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Move | Type | Class | PP | Power | Acc | Pri | Effect |
| Tutor: Can be taught at any time by an NPC. | ||||||||||||||
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Dive | ![]() |
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10 | 80 | 100% | User dives underwater, dodging all attacks, and hits next turn. |
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Double-Edge | ![]() |
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15 | 120 | 100% | User receives 1/3 the damage inflicted in recoil. |
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Endure | ![]() |
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10 | — | — | 4 | Prevents the user's HP from lowering below 1 this turn. |
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Explosion | ![]() |
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5 | 250 | 100% | User faints. |
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Ice Beam | ![]() |
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10 | 95 | 100% | Has a 10% chance to freeze the target. |
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Icy Wind | ![]() |
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15 | 55 | 95% | Has a 100% chance to lower the target's Speed by one stage. |
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Iron Defense | ![]() |
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15 | — | — | Raises the user's Defense by two stages. |
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Mimic | ![]() |
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10 | — | — | Copies the target's last used move. |
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Selfdestruct | ![]() |
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5 | 200 | 100% | User faints. |
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Sleep Talk | ![]() |
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10 | — | — | Randomly uses one of the user's other three moves. Only works if the user is sleeping. |
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Snore | ![]() |
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15 | 40 | 100% | Has a 30% chance to make the target flinch. Only works if the user is sleeping. |
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Substitute | ![]() |
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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. |
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Swagger | ![]() |
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15 | — | 90% | Raises the target's Attack by two stages and confuses the target. |
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Swift | ![]() |
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20 | 60 | — | Never misses. |
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Move | Type | Class | PP | Power | Acc | Pri | Effect |
| Machine: Can be taught at any time by using a TM or HM. | ||||||||||||||
| 03 | 03 | 03 | 03 | Water Pulse | ![]() |
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20 | 60 | 100% | Has a 20% chance to confuse the target. |
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| 03 | Curse | ![]() |
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10 | — | — | Ghosts pay half their max HP to hurt the target every turn. Others decrease Speed but raise Attack and Defense. |
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| 06 | 06 | 06 | 06 | 06 | 06 | 06 | Toxic | ![]() |
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10 | — | 90% | Badly poisons the target, inflicting more damage every turn. |
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| 09 | Take Down | ![]() |
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20 | 90 | 85% | User receives 1/4 the damage it inflicts in recoil. |
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| 10 | Double-Edge | ![]() |
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15 | 120 | 100% | User receives 1/3 the damage inflicted in recoil. |
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| 11 | BubbleBeam | ![]() |
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20 | 65 | 100% | Has a 10% chance to lower the target's Speed by one stage. |
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| 12 | Water Gun | ![]() |
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25 | 40 | 100% | Inflicts regular damage with no additional effect. |
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| 07 | 07 | 07 | 07 | 07 | Hail | ![]() |
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10 | — | — | Changes the weather to a hailstorm for five turns. |
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| 10 | 10 | 10 | 10 | 10 | 10 | Hidden Power | ![]() |
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15 | * | 100% | Power and type depend upon user's IVs. Power can range from 30 to 70. |
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| 13 | Snore | ![]() |
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15 | 40 | 100% | Has a 30% chance to make the target flinch. Only works if the user is sleeping. |
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| 13 | 13 | 13 | 13 | 13 | 13 | Ice Beam | ![]() |
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10 | 95 | 100% | Has a 10% chance to freeze the target. |
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| 14 | 14 | 14 | 14 | 14 | 14 | 14 | Blizzard | ![]() |
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5 | 120 | 70% | Has a 10% chance to freeze the target. |
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| 20 | Rage | ![]() |
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20 | 20 | 100% | If the user is hit after using this move, its Attack rises by one stage. |
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| 30 | Teleport | ![]() |
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20 | — | — | Immediately ends wild battles. No effect otherwise. |
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| 31 | Mimic | ![]() |
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10 | — | — | Copies the target's last used move. |
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| 16 | Icy Wind | ![]() |
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15 | 55 | 95% | Has a 100% chance to lower the target's Speed by one stage. |
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| 17 | 17 | 17 | 17 | 17 | 17 | Protect | ![]() |
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10 | — | — | 4 | Prevents any moves from hitting the user this turn. |
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| 18 | 18 | 18 | 18 | 18 | 18 | Rain Dance | ![]() |
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5 | — | — | Changes the weather to rain for five turns. |
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| 20 | Endure | ![]() |
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10 | — | — | 4 | Prevents the user's HP from lowering below 1 this turn. |
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| 21 | 21 | 21 | 21 | 21 | 21 | Frustration | ![]() |
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20 | * | 100% | Power increases as happiness decreases, up to a maximum of 102. |
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| 27 | 27 | 27 | 27 | 27 | 27 | Return | ![]() |
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20 | * | 100% | Power increases with happiness, up to a maximum of 102. |
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| 32 | 32 | 32 | 32 | 32 | 32 | 32 | Double Team | ![]() |
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15 | — | — | Raises the user's evasion by one stage. |
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| 42 | 42 | 42 | 42 | 42 | Facade | ![]() |
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20 | 70 | 100% | Power doubles if user is burned, paralyzed, or poisoned. |
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| 43 | 43 | 43 | 43 | Secret Power | ![]() |
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20 | 70 | 100% | Has a 30% chance to inflict a status effect which depends upon the terrain. |
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| 34 | Swagger | ![]() |
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15 | — | 90% | Raises the target's Attack by two stages and confuses the target. |
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| 35 | Sleep Talk | ![]() |
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10 | — | — | Randomly uses one of the user's other three moves. Only works if the user is sleeping. |
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| 33 | Reflect | ![]() |
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20 | — | — | Reduces damage from physical attacks by half. |
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| 34 | Bide | ![]() |
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10 | * | — | 1 | User waits for two turns, then hits back for twice the damage it took. |
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| 36 | Selfdestruct | ![]() |
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5 | 200 | 100% | User faints. |
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| 39 | 39 | Swift | ![]() |
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20 | 60 | — | Never misses. |
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| 44 | 44 | 44 | 44 | 44 | 44 | 44 | Rest | ![]() |
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10 | — | — | User sleeps for two turns, completely healing itself. |
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| 47 | Explosion | ![]() |
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5 | 250 | 100% | User faints. |
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| 49 | Tri Attack | ![]() |
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10 | 80 | 100% | Has a 20% chance to burn, freeze, or paralyze the target. |
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| 45 | 45 | 45 | 45 | 45 | 45 | Attract | ![]() |
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15 | — | 100% | Target falls in love if it has the opposite gender, and has a 50% chance to refuse attacking the user. |
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| 55 | 55 | Brine | ![]() |
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10 | 65 | 100% | Has double power against Pokémon that have less than half their max HP remaining. |
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| 58 | 58 | Endure | ![]() |
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10 | — | — | 4 | Prevents the user's HP from lowering below 1 this turn. |
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| 48 | Round | ![]() |
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15 | 60 | 100% | Has double power if it's used more than once per turn. |
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| 64 | 64 | 64 | Explosion | ![]() |
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5 | 250 | 100% | User faints. |
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| 66 | 66 | 66 | Payback | ![]() |
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10 | 50 | 100% | Power is doubled if the target has already moved this turn. |
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| 78 | 78 | Captivate | ![]() |
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20 | — | 100% | Lowers the target's Special Attack by two stages if it's the opposite gender. |
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| 82 | 82 | Sleep Talk | ![]() |
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10 | — | — | Randomly uses one of the user's other three moves. Only works if the user is sleeping. |
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| 83 | 83 | Natural Gift | ![]() |
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15 | * | 100% | Power and type depend on the held berry. |
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| 87 | 87 | 87 | Swagger | ![]() |
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15 | — | 90% | Raises the target's Attack by two stages and confuses the target. |
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| 50 | 90 | 90 | 90 | Substitute | ![]() |
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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. |
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| H3 | H3 | H3 | H3 | H3 | H3 | H3 | Surf | ![]() |
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15 | 95 | 100% | Inflicts regular damage and can hit Dive users. |
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| H8 | H8 | H6 | Dive | ![]() |
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10 | 80 | 100% | User dives underwater, dodging all attacks, and hits next turn. |
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| H6 | H5 | Whirlpool | ![]() |
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15 | 35 | 85% | Prevents the target from leaving battle and inflicts 1/16 its max HP in damage for 2-5 turns. |
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½ male, ½ female



Pearl
Big Pearl
sea

Pomaceous



