Shelgon locations — where to catch

In Paldea (Scarlet & Violet)

• Alfornada Cavern — Walk
• South Province (Area Six) — Walk

In Johto & Kanto (HeartGold & SoulSilver)

• Johto Safari Zone — Walk

Other games (3)

• Ultra Sun / Ultra Moon (Gen 7): Kalae Bay
• Sun / Moon (Gen 7): Kalae Bay
• X / Y (Gen 6): Friend Safari

Shelgon — full Pokédex entry