Where to find Pokémon in Johto & Kanto at Sea Route 21 (Pokémon Gold, Silver & Crystal)

Pokémon at Sea Route 21

• Rattata — Walk
• Raticate — Walk
• Tentacool — Good Rod, Old Rod, Surf
• Tentacruel — Super Rod, Surf
• Shellder — Good Rod, Super Rod
• Tangela — Walk
• Mr. Mime — Walk
• Magikarp — Good Rod, Old Rod
• Chinchou — Good Rod, Super Rod
• Lanturn — Super Rod

Pokémon Gold, Silver & Crystal interactive map (Johto & Kanto)