Where to find Seaking in Red, Blue & Yellow

• Cerulean Cave — Super Rod, Walk
• Cerulean City — Super Rod, Walk
• Fuchsia City — Super Rod
• Route 23 — Super Rod
• Route 24 — Super Rod

Seaking in every game · Kanto interactive map

By game: Pokémon Red map · Pokémon Blue map · Pokémon Yellow map