Shellder
#90 in the Red and Blue Pokédex • Bivalve Pokémon
Pokémon Red
Its hard shell repels any kind of attack. It is vulnerable only when its shell is open.
Pokémon Blue
Its hard shell repels any kind of attack. It is vulnerable only when its shell is open.
Pokédexes
Egg Group
Steps to Hatch
Effort Values Yielded
Gender Ratio
Capture Rate
Base Experience
| Pokémon | Requires | Evolution |
|---|---|---|
 Shellder #90 |  Use Water Stone |  Cloyster #91 |
Pokémon Blue
| Location | Method | Level | Chance | Conditions |
|---|---|---|---|---|
Seafoam Islands Seafoam Islands (B1F) | Walking in tall grass or a cave | 30 | 20% | - |
Seafoam Islands Seafoam Islands (B2F) | Walking in tall grass or a cave | 30 | 10% | - |
Seafoam Islands Seafoam Islands (B3F) | Fishing with a Super Rod | 15 | 17% | - |
Seafoam Islands Seafoam Islands (B3F) | Fishing with a Super Rod | 15 | 8% | - |
Seafoam Islands Seafoam Islands (B4F) | Fishing with a Super Rod | 15 | 17% | - |
Seafoam Islands Seafoam Islands (B4F) | Fishing with a Super Rod | 15 | 8% | - |
Sea Route 19 Road 19 | Fishing with a Super Rod | 15 | 17% | - |
Sea Route 19 Road 19 | Fishing with a Super Rod | 15 | 8% | - |
Sea Route 20 Road 20 | Fishing with a Super Rod | 15 | 17% | - |
Sea Route 20 Road 20 | Fishing with a Super Rod | 15 | 8% | - |
Cinnabar Island | Fishing with a Super Rod | 15 | 17% | - |
Cinnabar Island | Fishing with a Super Rod | 15 | 8% | - |
Vermilion City | Fishing with a Super Rod | 15 | 17% | - |
Vermilion City | Fishing with a Super Rod | 15 | 8% | - |
Vermilion City | Fishing with a Super Rod | 15 | 25% | - |
Route 6 Road 6 | Fishing with a Super Rod | 15 | 17% | - |
Route 6 Road 6 | Fishing with a Super Rod | 15 | 8% | - |
Route 6 Road 6 | Fishing with a Super Rod | 15 | 25% | - |
Route 11 Road 11 | Fishing with a Super Rod | 15 | 17% | - |
Route 11 Road 11 | Fishing with a Super Rod | 15 | 8% | - |
Route 11 Road 11 | Fishing with a Super Rod | 15 | 25% | - |
Sea Route 21 Road 21 | Fishing with a Super Rod | 15 | 17% | - |
Sea Route 21 Road 21 | Fishing with a Super Rod | 15 | 8% | - |
Vermilion City S.S. Anne dock | Fishing with a Super Rod | 15 | 17% | - |
Vermilion City S.S. Anne dock | Fishing with a Super Rod | 15 | 8% | - |
Vermilion City S.S. Anne dock | Fishing with a Super Rod | 15 | 25% | - |
Pokémon Red
| Location | Method | Level | Chance | Conditions |
|---|---|---|---|---|
Seafoam Islands Seafoam Islands (1F) | Walking in tall grass or a cave | 30 | 15% | - |
Seafoam Islands Seafoam Islands (1F) | Walking in tall grass or a cave | 28 | 4% | - |
Seafoam Islands Seafoam Islands (B1F) | Walking in tall grass or a cave | 32 | 15% | - |
Seafoam Islands Seafoam Islands (B2F) | Walking in tall grass or a cave | 28 | 5% | - |
Seafoam Islands Seafoam Islands (B3F) | Walking in tall grass or a cave | 31 | 10% | - |
Seafoam Islands Seafoam Islands (B3F) | Walking in tall grass or a cave | 29 | 5% | - |
Seafoam Islands Seafoam Islands (B3F) | Fishing with a Super Rod | 15 | 17% | - |
Seafoam Islands Seafoam Islands (B3F) | Fishing with a Super Rod | 15 | 8% | - |
Seafoam Islands Seafoam Islands (B4F) | Walking in tall grass or a cave | 31 | 20% | - |
Seafoam Islands Seafoam Islands (B4F) | Walking in tall grass or a cave | 33 | 10% | - |
Seafoam Islands Seafoam Islands (B4F) | Fishing with a Super Rod | 15 | 17% | - |
Seafoam Islands Seafoam Islands (B4F) | Fishing with a Super Rod | 15 | 8% | - |
Sea Route 19 Road 19 | Fishing with a Super Rod | 15 | 17% | - |
Sea Route 19 Road 19 | Fishing with a Super Rod | 15 | 8% | - |
Sea Route 20 Road 20 | Fishing with a Super Rod | 15 | 17% | - |
Sea Route 20 Road 20 | Fishing with a Super Rod | 15 | 8% | - |
Cinnabar Island | Fishing with a Super Rod | 15 | 17% | - |
Cinnabar Island | Fishing with a Super Rod | 15 | 8% | - |
Vermilion City | Fishing with a Super Rod | 15 | 17% | - |
Vermilion City | Fishing with a Super Rod | 15 | 8% | - |
Vermilion City | Fishing with a Super Rod | 15 | 25% | - |
Route 6 Road 6 | Fishing with a Super Rod | 15 | 17% | - |
Route 6 Road 6 | Fishing with a Super Rod | 15 | 8% | - |
Route 6 Road 6 | Fishing with a Super Rod | 15 | 25% | - |
Route 11 Road 11 | Fishing with a Super Rod | 15 | 17% | - |
Route 11 Road 11 | Fishing with a Super Rod | 15 | 8% | - |
Route 11 Road 11 | Fishing with a Super Rod | 15 | 25% | - |
Sea Route 21 Road 21 | Fishing with a Super Rod | 15 | 17% | - |
Sea Route 21 Road 21 | Fishing with a Super Rod | 15 | 8% | - |
Vermilion City S.S. Anne dock | Fishing with a Super Rod | 15 | 17% | - |
Vermilion City S.S. Anne dock | Fishing with a Super Rod | 15 | 8% | - |
Vermilion City S.S. Anne dock | Fishing with a Super Rod | 15 | 25% | - |
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| Start | Tackle |  |  Physical | 35 | 95 | 35 | |
| Start | Withdraw |  |  Status | - | - | 40 | |
| 18 | Supersonic | | Status | - | 55 | 20 | |
| 23 | Clamp | | Physical | 35 | 75 | 10 | |
| 30 | Aurora Beam |  |  Special | 65 | 100 | 20 | |
| 39 | Leer | | Status | - | 100 | 30 | |
| 50 | Ice Beam | | Special | 95 | 100 | 10 |
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| HM03 | Surf | | Special | 95 | 100 | 15 | |
| TM06 | Toxic |  | Status | - | 85 | 10 | |
| TM09 | Take Down | | Physical | 90 | 85 | 20 | |
| TM10 | Double-Edge | | Physical | 100 | 100 | 15 | |
| TM11 | Bubble Beam | | Special | 65 | 100 | 20 | |
| TM12 | Water Gun | | Special | 40 | 100 | 25 | |
| TM13 | Ice Beam | | Special | 95 | 100 | 10 | |
| TM14 | Blizzard | | Special | 110 | 90 | 5 | |
| TM20 | Rage | | Physical | 20 | 100 | 20 | |
| TM30 | Teleport |  | Status | - | - | 20 | |
| TM31 | Mimic | | Status | - | - | 10 | |
| TM32 | Double Team | | Status | - | - | 15 | |
| TM33 | Reflect | | Status | - | - | 20 | |
| TM34 | Bide | | Physical | - | - | 10 | |
| TM36 | Self-Destruct | | Physical | 130 | 100 | 5 | |
| TM39 | Swift | | Special | 60 | - | 20 | |
| TM44 | Rest | | Status | - | - | 5 | |
| TM47 | Explosion | | Physical | 170 | 100 | 5 | |
| TM49 | Tri Attack | | Special | 80 | 100 | 10 | |
| TM50 | Substitute | | Status | - | - | 10 |