Where to catch Swablu

In Paldea (Scarlet & Violet)

• Casseroya Lake — Walk
• East Province (Area One) — Walk
• South Province (Area Five) — Walk
• South Province (Area Four) — Walk
• South Province (Area Six) — Walk
• South Province (Area Three) — Walk
• West Province (Area One) — Walk

In Blueberry Academy (Scarlet & Violet – The Indigo Disk)

• Canyon Biome — Walk

In Hoenn (Ruby, Sapphire & Emerald)

• Route 114 — Walk
• Route 115 — Walk

Swablu — full Pokédex entry