Where to find Seadra in Red, Blue & Yellow

Super Rod: Route 12 (30%, Yellow only), Cerulean Cave (25%, Red & Blue only), Route 23 (25%, Red & Blue only) + 1 more
Walk: Seafoam Islands (5%, Red only)

• Cerulean Cave (1F, B1F) — Super Rod
• Route 12 — Super Rod
• Route 13 — Super Rod
• Route 23 — Super Rod
• Seafoam Islands (B1F, B3F) — Walk

Seadra in every game · Pokémon Red, Blue & Yellow interactive map (Kanto)