Swanna locations — where to catch

In Kitakami (Scarlet & Violet – The Teal Mask)

• Kitakami Wilds — Static Encounter

Other games (4)

• Ultra Sun / Ultra Moon (Gen 7): Ultra Space Wilds
• X / Y (Gen 6): Friend Safari
• Black 2 / White 2 (Gen 5): Marvelous Bridge
• Black / White (Gen 5): Marvelous Bridge

Swanna — full Pokédex entry