
| Id | 90 |
| Type | water |
| Species | Bivalve Pokémon |
| Height | 0.3 m |
| Weight | 4 kg |
| Abilities | Shell Armor, Skill Link Hidden Ability: Overcoat |
| Local Ids | 90 (Red/Blue/Yellow) 169 (Gold/Silver/Crystal) 90 (FireRed/LeafGreen) 171 (HeartGold/SoulSilver) 36 (X/Y — Coastal Kalos) 115 (Sun/Moon — Alola dex) 138 (U.Sun/U.Moon — Alola dex) 90 (Let's Go Pikachu/Let's Go Eevee) 150 (Sword/Shield) 131 (The Isle of Armor) |
| Catch rate | 190 |
| Base Friendship | 50 (normal) |
| Base Exp | 61 |
| Growth Rate | Slow |
| Egg Groups | Water 3 |
| Gender | 50% male, 50% female |
| Egg cycles | 20 (4,884–5,140 steps) |
| HP | 30 | |
| Attack | 65 | |
| Defense | 100 | |
| Sp. Atk | 45 | |
| Sp. Def | 25 | |
| Speed | 40 | |
| Total | 305 |
| Level | Move | Type | Category | Power | Accuracy |
|---|---|---|---|---|---|
| 1 | Tackle | normal | physical | 40 | 100 |
| 1 | Water Gun | water | special | 40 | 100 |
| 4 | Withdraw | water | status | 0 | — |
| 8 | Ice Shard | ice | physical | 40 | 100 |
| 12 | Leer | normal | status | 0 | 100 |
| 16 | Whirlpool | water | special | 35 | 85 |
| 20 | Supersonic | normal | status | 0 | 55 |
| 24 | Aurora Beam | ice | special | 65 | 100 |
| 28 | Protect | normal | status | 0 | — |
| 32 | Razor Shell | water | physical | 75 | 95 |
| 36 | Iron Defense | steel | status | 0 | — |
| 40 | Ice Beam | ice | special | 90 | 100 |
| 44 | Shell Smash | normal | status | 0 | — |
| 48 | Hydro Pump | water | special | 110 | 80 |
Shellder does not learn any moves from evolution.
| Move | Type | Category | Power | Accuracy |
|---|---|---|---|---|
| Aqua Ring | water | status | 0 | — |
| Bubble Beam | water | special | 65 | 100 |
| Icicle Spear | ice | physical | 25 | 100 |
| Life Dew | water | status | 0 | — |
| Mud Shot | ground | special | 55 | 95 |
| Rapid Spin | normal | physical | 50 | 100 |
| Rock Blast | rock | physical | 25 | 90 |
| Screech | normal | status | 0 | 85 |
| Take Down | normal | physical | 90 | 85 |
Shellder can not have any move tutor moves.
| TM | Move | Type | Category | Power | Accuracy |
|---|---|---|---|---|---|
| 3 | Water Pulse | water | special | 60 | 100 |
| 7 | Hail | ice | status | 0 | — |
| 13 | Ice Beam | ice | special | 90 | 100 |
| 14 | Blizzard | ice | special | 110 | 70 |
| 17 | Protect | normal | status | 0 | — |
| 18 | Rain Dance | water | status | 0 | — |
| 32 | Double Team | normal | status | 0 | — |
| 42 | Facade | normal | physical | 70 | 100 |
| 44 | Rest | psychic | status | 0 | — |
| 45 | Attract | normal | status | 0 | 100 |
| 55 | Brine | water | special | 65 | 100 |
| 58 | Endure | normal | status | 0 | — |
| 64 | Explosion | normal | physical | 250 | 100 |
| 66 | Payback | dark | physical | 50 | 100 |
| 72 | Avalanche | ice | physical | 60 | 100 |
| 82 | Sleep Talk | normal | status | 0 | — |
| 87 | Swagger | normal | status | 0 | 85 |
| 90 | Substitute | normal | status | 0 | — |
| 95 | Surf | water | special | 90 | 100 |
Shellder can not get any moves from trs.
| English | Shellder |
|---|---|
| Spanish | Shellder |
| Italian | Shellder |
| Japanese | シェルダー (Shellder) |
| German | Muschas |
| French | Kokiyas |
| Red Blue | Route 6, Route 11, Route 19, Route 20, Route 21, Seafoam Islands, Vermilion City |
|---|---|
| Yellow | Route 17, Route 18, Vermilion City |
| Gold Silver | Route 26, Route 27, New Bark Town, Olivine City, Pallet Town, Union Cave, Vermilion City |
| Crystal | Route 26, Route 27, New Bark Town, Olivine City, Pallet Town, Vermilion City |
| Ruby Sapphire | Trade/migrate from another game |
| FireRed | Cinnabar Island, Five Island, Icefall Cave, One Island, Pallet Town, Vermilion City |
| LeafGreen Emerald | Trade/migrate from another game |
| Diamond Pearl Platinum | Route 205, Fuego Ironworks, Valley Windworks |
| HeartGold SoulSilver | Route 20, Route 21, Route 26, Route 27, Route 41, Route 47, Cinnabar Island, New Bark Town, Pallet Town, Vermilion City |
| Black White | Route 13, Undella Bay, Undella Town |
| Black 2 White 2 | Route 13, Undella Town, Humilau City, Seaside Cave |
| X | Trade/migrate from another game |
| Y | Route 8 |
| Omega Ruby Alpha Sapphire | Trade/migrate from another game |
| Sun Moon | Kala'e Bay, Poké Pelago |
| Ultra Sun Ultra Moon | Kala'e Bay |
| Let's Go Pikachu Let's Go Eevee | Seafoam Islands |
| Sword Shield | East Lake Axewell, West Lake Axewell, Giant's Seat, Courageous Cavern, Loop Lagoon |
| Brilliant Diamond Shining Pearl | Route 205, Fuego Ironworks, Valley Windworks, Fountainspring Cave, Riverbank Cave, Still-Water Cavern |