| DEX↕️ | ✔️ | Name↕️ | Game↕️ | Location↕ |
|---|---|---|---|---|
| 91 | Cloyster | Moon | Evolve Shellder (Water Stone) | |
| 91 | Cloyster | White | Route 13, Undella Town, Undella Bay (Fishing in rippling water) | |
| 91 | Cloyster | Black2 | Route 13, Undella Town, Seaside Cave, Humilau City (Fishing in rippling water) | |
| 91 | Cloyster | White2 | Route 13, Undella Town, Seaside Cave, Humilau City (Fishing in rippling water) | |
| 91 | Cloyster | X | Friend Safari (Ice) | |
| 91 | Cloyster | Y | Route 8 (Super Rod)
Friend Safari (Ice) | |
| 91 | Cloyster | OmegaRuby | Trade | |
| 91 | Cloyster | AlphaSapphire | Trade | |
| 91 | Cloyster | Sun | Evolve Shellder (Water Stone) | |
| 91 | Cloyster | Black | Route 13, Undella Town, Undella Bay (Fishing in rippling water) | |
| 91 | Cloyster | UltraSun | Evolve Shellder (Water Stone) | |
| 91 | Cloyster | UltraMoon | Evolve Shellder (Water Stone) | |
| 91 | Cloyster | LetsGoPikachu | Seafoam Islands (Sea Skim) | |
| 91 | Cloyster | LetsGoEevee | Seafoam Islands (Sea Skim) | |
| 91 | Cloyster | Sword | Giant's Seat (Fishing)
West Lake Axewell, East Lake Axewell (Wanderer) Dusty Bowl, North Lake Miloch, South Lake Miloch, Stony Wilderness, West Lake Axewell (Max Raid Battle) | |
| 91 | Cloyster | Shield | Giant's Seat (Fishing)
West Lake Axewell, East Lake Axewell (Wanderer) Dusty Bowl, North Lake Miloch, South Lake Miloch, Stony Wilderness, West Lake Axewell (Max Raid Battle) | |
| 91 | Cloyster | SwSh-DLC | Courageous Cavern, Loop Lagoon (Fishing)
Fields of Honor, Challenge Beach, Loop Lagoon, Workout Sea, Insular Sea (Max Raid Battle) | |
| 91 | Cloyster | Red | Evolve Shellder (Water Stone) | |
| 91 | Cloyster | SoulSilver | Evolve Shellder (Water Stone) | |
| 91 | Cloyster | HeartGold | Evolve Shellder (Water Stone) | |
| 91 | Cloyster | Platinum | Evolve Shellder (Water Stone) | |
| 91 | Cloyster | Pearl | Evolve Shellder (Water Stone) | |
| 91 | Cloyster | Diamond | Evolve Shellder (Water Stone) | |
| 91 | Cloyster | LeafGreen | Trade | |
| 91 | Cloyster | FireRed | Evolve Shellder (Water Stone) | |
| 91 | Cloyster | Emerald | Trade | |
| 91 | Cloyster | Sapphire | Trade | |
| 91 | Cloyster | Ruby | Trade | |
| 91 | Cloyster | Crystal | Evolve Shellder (Water Stone) | |
| 91 | Cloyster | Silver | Evolve Shellder (Water Stone) | |
| 91 | Cloyster | Gold | Evolve Shellder (Water Stone) | |
| 91 | Cloyster | Yellow | Evolve Shellder (Water Stone) | |
| 91 | Cloyster | Blue | Evolve Shellder (Water Stone) |