Where to find Tentacool in HeartGold & SoulSilver

• Cherrygrove City — Good Rod, Old Rod, Surf
• Cianwood City — Gift, Surf
• Cinnabar Island — Good Rod, Old Rod, Surf
• New Bark Town — Good Rod, Old Rod, Surf
• Olivine City — Surf
• Pallet Town — Good Rod, Old Rod, Surf
• Route 12 — Good Rod, Old Rod, Super Rod, Surf
• Route 13 — Good Rod, Old Rod, Super Rod, Surf
• Route 26 — Good Rod, Old Rod, Surf
• Route 27 — Good Rod, Old Rod, Surf
• Route 32 — Good Rod, Old Rod, Super Rod, Surf
• Route 34 — Surf
• Route 47 — Good Rod, Old Rod, Surf
• Sea Route 19 — Surf
• Sea Route 20 — Good Rod, Old Rod, Surf
• Sea Route 21 — Good Rod, Old Rod, Surf
• Sea Route 40 — Surf
• Sea Route 41 — Good Rod, Old Rod, Surf
• Union Cave — Surf
• Vermilion City — Good Rod, Old Rod, Surf
• Whirl Islands — Surf

Tentacool in every game · Johto & Kanto interactive map

By game: Pokémon HeartGold map · Pokémon SoulSilver map