| 
 | General | Location | Attacks | Stats | Egg Moves | 3rd Gen Dex | 4th Gen Dex | 5th Gen Dex | 
| Image | Name | Gender Ratio | Type | Capture Rate | |||||
| 
 | Wailmer | 
 |  | 125 | 
| Black | |||||
| Location | Rarity | Method | Season | Min Level | Max Level | 
| Undella Town | 60 % | Surf - Shaking Spots | All | 25 | 60 | 
| Undella Bay | 90 % | Surf - Shaking Spots | Spring | 25 | 60 | 
| Undella Bay | 90 % | Surf - Shaking Spots | Summer | 25 | 60 | 
| Undella Bay | 90 % | Surf - Shaking Spots | Autumn | 25 | 60 | 
| Undella Bay | 60 % | Surf - Shaking Spots | Winter | 25 | 60 | 
| White | |||||
| Location | Rarity | Method | Season | Min Level | Max Level | 
| Undella Town | 60 % | Surf - Shaking Spots | All | 25 | 60 | 
| Undella Bay | 90 % | Surf - Shaking Spots | Spring | 25 | 60 | 
| Undella Bay | 90 % | Surf - Shaking Spots | Summer | 25 | 60 | 
| Undella Bay | 90 % | Surf - Shaking Spots | Autumn | 25 | 60 | 
| Undella Bay | 60 % | Surf - Shaking Spots | Winter | 25 | 60 | 
| Black 2 | |||||
| Location | Rarity | Method | Season | Min Level | Max Level | 
| Undella Bay | 30 % | Surf - Shaking Spots | Spring | 25 | 40 | 
| Undella Bay | 30 % | Surf - Shaking Spots | Summer | 25 | 40 | 
| Undella Bay | 30 % | Surf - Shaking Spots | Autumn | 25 | 40 | 
| Undella Bay | 60 % | Surf - Shaking Spots | Winter | 25 | 40 | 
| White 2 | |||||
| Location | Rarity | Method | Season | Min Level | Max Level | 
| Undella Bay | 30 % | Surf - Shaking Spots | Spring | 25 | 40 | 
| Undella Bay | 30 % | Surf - Shaking Spots | Summer | 25 | 40 | 
| Undella Bay | 30 % | Surf - Shaking Spots | Autumn | 25 | 40 | 
| Undella Bay | 60 % | Surf - Shaking Spots | Winter | 25 | 40 | 
| 
 | 
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