Where to find Tentacruel in HeartGold & SoulSilver

Surf: Sea Route 41 (30%), Cherrygrove City (10%), Cianwood City (10%) + 17 more
Super Rod: Cinnabar Island (20%), Route 47 (20%), Sea Route 41 (20%) + 7 more

• Cherrygrove City — Surf
• Cianwood City — Surf
• Cinnabar Island — Super Rod, Surf
• New Bark Town — Super Rod, Surf
• Olivine City — Surf
• Pallet Town — Super Rod, Surf
• Route 12 — Surf
• Route 13 — Surf
• Route 26 — Super Rod, Surf
• Route 27 — Super Rod, Surf
• Route 32 — Surf
• Route 34 — Surf
• Route 47 — Super Rod
• Sea Route 19 — Surf
• Sea Route 20 — Super Rod, Surf
• Sea Route 21 — Super Rod, Surf
• Sea Route 40 — Surf
• Sea Route 41 — Super Rod, Surf
• Union Cave (B2F) — Surf
• Vermilion City — Super Rod, Surf
• Whirl Islands (1F, B2F) — Surf

Tentacruel in every game · Pokémon HeartGold & SoulSilver interactive map (Johto & Kanto)