Tentacool locations — where to catch

In Blueberry Academy (Scarlet & Violet – The Indigo Disk)

• Coastal Biome — Walk

In Hisui (Legends: Arceus)

• Islespy Shore — Walk
• Lunkers Lair — Walk
• Seagrass Haven — Walk

In Sinnoh (Diamond, Pearl & Platinum)

• Canalave City — Surf
• Fuego Ironworks — Surf
• Iron Island — Surf
• Pastoria City — Surf
• Route 205 — Surf
• Route 212 — Surf
• Route 213 — Surf
• Route 218 — Surf
• Route 219 — Surf
• Route 221 — Surf
• Route 222 — Surf
• Sea Route 220 — Surf
• Sunyshore City — Surf
• Valley Windworks — Surf

In Johto & Kanto (HeartGold & SoulSilver)

• Cherrygrove City — 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

In Hoenn (Ruby, Sapphire & Emerald)

• Abandoned Ship — Good Rod, Old Rod, Super Rod, Surf
• Dewford Town — Good Rod, Old Rod, Surf
• Ever Grande City — Old Rod, Surf
• Lilycove City — Good Rod, Old Rod, Surf
• Mossdeep City — Good Rod, Old Rod, Surf
• Pacifidlog Town — Good Rod, Old Rod, Surf
• Route 103 — Good Rod, Old Rod, Surf
• Route 105 — Good Rod, Old Rod, Surf
• Route 106 — Good Rod, Old Rod, Surf
• Route 107 — Good Rod, Old Rod, Surf
• Route 108 — Good Rod, Old Rod, Surf
• Route 109 — Good Rod, Old Rod, Surf
• Route 110 — Good Rod, Old Rod, Surf
• Route 115 — Good Rod, Old Rod, Surf
• Route 118 — Good Rod, Old Rod, Surf
• Route 119 — Good Rod, Old Rod, Surf
• Route 121 — Good Rod, Old Rod, Surf
• Route 122 — Good Rod, Old Rod, Surf
• Route 123 — Good Rod, Old Rod, Surf
• Route 124 — Good Rod, Old Rod, Surf
• Route 125 — Good Rod, Old Rod, Surf
• Route 126 — Good Rod, Old Rod, Surf
• Route 127 — Good Rod, Old Rod, Surf
• Route 128 — Old Rod, Surf
• Route 129 — Good Rod, Old Rod, Surf
• Route 130 — Good Rod, Old Rod, Surf
• Route 131 — Good Rod, Old Rod, Surf
• Route 132 — Good Rod, Old Rod, Surf
• Route 133 — Good Rod, Old Rod, Surf
• Route 134 — Good Rod, Old Rod, Surf
• Seafloor Cavern — Good Rod, Old Rod, Surf
• Shoal Cave — Good Rod, Old Rod, Surf
• Slateport City — Good Rod, Old Rod, Surf
• Sootopolis City — Old Rod

In Kanto (FireRed & LeafGreen)

• Cerulean City — Surf
• Cinnabar Island — Surf
• Pallet Town — Surf
• Route 10 — Surf
• Route 11 — Surf
• Route 12 — Surf
• Route 13 — Surf
• Route 24 — Surf
• Route 4 — Surf
• S.S. Anne — Surf
• Sea Route 19 — Surf
• Sea Route 20 — Surf
• Sea Route 21 — Surf
• Vermilion City — Surf

In Sevii Islands (FireRed & LeafGreen)

• Bond Bridge — Surf
• Five Island — Surf
• Five Isle Meadow — Surf
• Green Path — Surf
• Icefall Cave — Surf
• Kindle Road — Surf
• Memorial Pillar — Surf
• One Island — Surf
• Outcast Island — Surf
• Resort Gorgeous — Surf
• Tanoby Ruins — Surf
• Trainer Tower — Surf
• Treasure Beach — Surf
• Water Labyrinth — Surf
• Water Path — Surf

In Johto & Kanto (Gold, Silver & Crystal)

• Cherrygrove City — Surf
• Cianwood City — Surf
• Cinnabar Island — Good Rod, Old Rod, Surf
• New Bark Town — Good Rod, Old Rod, Surf
• Olivine City — Good Rod, 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
• 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

In Kanto (Red, Blue & Yellow)

• Cinnabar Island — Super Rod
• Pallet Town — Super Rod
• Route 11 — Super Rod
• Route 12 — Super Rod
• Route 13 — Super Rod
• Route 17 — Super Rod
• Route 18 — Super Rod
• Sea Route 19 — Surf, Super Rod
• Sea Route 20 — Surf, Super Rod
• Sea Route 21 — Surf, Super Rod
• Seafoam Islands — Surf
• Vermilion City — Super Rod
• Viridian City — Super Rod

Other games (7)

• Brilliant Diamond / Shining Pearl (Gen 8): Canalave City, Fuego Ironworks, Iron Island, Pastoria City, Route 205, Route 213, Route 218, Route 219, Route 221, Route 222, Sea Route 220, Valley Windworks
• Sword / Shield — The Isle of Armor (Gen 8): Challenge Beach, Courageous Cavern, Fields of Honor, Forest of Focus, Honeycalm Island, Honeycalm Sea, Insular Sea, Loop Lagoon, Soothing Wetlands, Stepping-Stone Sea, Workout Sea
• Let's Go, Pikachu! / Let's Go, Eevee! (Gen 7): Kanto Route 10, Kanto Route 11, Kanto Route 12, Kanto Route 13, Kanto Route 18, Kanto Route 24, Kanto Route 4, Kanto Sea Route 19, Kanto Sea Route 20, Kanto Sea Route 21, Seafoam Islands
• Ultra Sun / Ultra Moon (Gen 7): Route 1, Alola Route 7, Route 8, Brooklet Hill, Hano Beach, Hauoli City, Kalae Bay, Melemele Sea
• Sun / Moon (Gen 7): Alola Route 1, Alola Route 14, Alola Route 15, Alola Route 7, Route 8, Brooklet Hill, Hano Beach, Hau'oli City, Kalae Bay, Melemele Sea, Secluded Shore, Ula'ula Beach
• Omega Ruby / Alpha Sapphire (Gen 6): Battle Resort, Dewford Town, Ever Grande City, Route 103, Route 105, Route 106, Route 107, Route 108, Route 109, Route 110, Route 115, Route 118, Route 119, Route 120, Route 122, Route 124, Route 125, Route 126, Route 127, Route 128, Route 129, Route 130, Route 131, Route 132, Route 133, Route 134, Victory Road, Lilycove City, Mossdeep City, Pacifidlog Town, Sea Mauville, Seafloor Cavern, Sealed Chamber, Shoal Cave, Slateport City, Team Magma Hideout, Team Aqua Hideout
• X / Y (Gen 6): Ambrette Town, Azure Bay, Cyllage City, Kalos Route 12, Kalos Route 8, Shalour City

Tentacool — full Pokédex entry