Encounter locations
| Region | Location | Method | Level |
|---|---|---|---|
| Hoenn | Route 103 | Overworld swarmOnly while this swarm is active | — |
| Hoenn | Route 110 | Overworld swarmOnly while this swarm is active | — |
| Sinnoh | Canalave City | Surf | 20–30 |
| Sinnoh | Fuego Ironworks Outside | Surf | 20–30 |
| Sinnoh | Pastoria City | Overworld swarmOnly while this swarm is active | — |
| Sinnoh | Pastoria City | Surf | 20–30 |
| Sinnoh | Route 205 South | Surf | 20–30 |
| Sinnoh | Route 205 South | Walking | 9–12 |
| Sinnoh | Route 212 South | Surf | 20–30 |
| Sinnoh | Route 212 South | WalkingBefore National Dex | 23–26 |
| Sinnoh | Route 212 South | WalkingNational Dex obtained | 23–26 |
| Sinnoh | Route 213 | Surf | 20–30 |
| Sinnoh | Route 213 | Walking | 24–26 |
| Sinnoh | Route 218 | Surf | 20–30 |
| Sinnoh | Valley Windworks Outside | Surf | 20–30 |
| Sinnoh | Valley Windworks Outside | Walking | 9–12 |
| Johto | Union Cave | Overworld swarmOnly while this swarm is active | — |
This Pokémon is eligible for Mirage Rifts. Each opening rolls its own pool, so check active portals on the Town Map.
Check the Town Map to see which swarms are active.
This guide covers documented encounter tables and selected story events. Other scripted gifts or events may also award this Pokémon.
Natures
Randomly generated Pokémon can have any of the 25 natures. Twenty raise one stat by 10% and lower another by 10%. Five are neutral. HP stays the same.
View all 25 natures and stat effects
| Nature | Raises (+10%) | Lowers (−10%) |
|---|---|---|
| Hardy | — | — |
| Lonely | Attack | Defense |
| Brave | Attack | Speed |
| Adamant | Attack | Special Attack |
| Naughty | Attack | Special Defense |
| Bold | Defense | Attack |
| Docile | — | — |
| Relaxed | Defense | Speed |
| Impish | Defense | Special Attack |
| Lax | Defense | Special Defense |
| Timid | Speed | Attack |
| Hasty | Speed | Defense |
| Serious | — | — |
| Jolly | Speed | Special Attack |
| Naive | Speed | Special Defense |
| Modest | Special Attack | Attack |
| Mild | Special Attack | Defense |
| Quiet | Special Attack | Speed |
| Bashful | — | — |
| Rash | Special Attack | Special Defense |
| Calm | Special Defense | Attack |
| Gentle | Special Defense | Defense |
| Sassy | Special Defense | Speed |
| Careful | Special Defense | Special Attack |
| Quirky | — | — |
Stats and abilities
- HP
- 76
- Attack
- 48
- Defense
- 48
- Sp. Attack
- 57
- Sp. Defense
- 62
- Speed
- 34
Abilities · Sticky Hold / Storm Drain
Hidden ability · Sand Force
Size · 0.3 m · 6.3 kg
Evolution and forms
- Into Gastrodon · Level 30
Level-up moves
View level-up moves for Shellos
| Level | Move |
|---|---|
| 1 | Water Gun |
| 1 | Mud Slap |
| 5 | Harden |
| 10 | Recover |
| 15 | Water Pulse |
| 20 | Ancient Power |
| 25 | Body Slam |
| 31 | Muddy Water |
| 35 | Earth Power |
| 40 | Rain Dance |
| 45 | Memento |