Where to Find Tentacruel
Generation 2
Routes 20, 21, 26, 27 and 41, New Bark Town, Olivine City, Pallet Town, Vermilion City, Cinnabar Island (Surfing and Super Rod), Routes 12, 13, 19, 32, 34 and 40, Cherrygrove City, Cianwood City, Whirl Islands, Union Cave (Surfing)
Routes 20, 21, 26, 27 and 41, New Bark Town, Olivine City, Pallet Town, Vermilion City, Cinnabar Island (Surfing and Super Rod), Routes 12, 13, 19, 32, 34 and 40, Cherrygrove City, Cianwood City, Whirl Islands, Union Cave (Surfing)
Generation 3
Treasure Beach, Kindle Road, Bond Bridge, Five Isle Meadow, Memorial Pillar, Water Labyrinth, Resort Gorgeous, Water Path, Green Path, Outcast Island, Tanoby Ruins, One Island, Five Island, Icefall Cave, Trainer Tower (Surfing)
Generation 4
Routes 205, 213, 218, 219, 220, 221, 222, 223, 224, 226, and 230, Pastoria City, Canalave City, Sunyshore City, Valley Windworks, Fuego Ironworks, Iron Island, Pokémon League (Surfing)
Routes 205, 213, 218, 219, 220, 221, 222, 223, 224, 226, and 230, Pastoria City, Canalave City, Sunyshore City, Valley Windworks, Fuego Ironworks, Iron Island, Pokémon League (Surfing)
Routes 205, 212, 213, 218, 219, 220, 221, 222, 223, 224, 226, and 230, Pastoria City, Canalave City, Sunyshore City, Valley Windworks, Fuego Ironworks, Iron Island, Pokémon League (Surfing)
Routes 20, 21, 26, 27, and 41, New Bark Town, Vermilion City, Cinnabar Island, Pallet Town (Surfing and Super Rod), Routes 12, 13, 19, 32, 34, and 40, Cherrygrove City, Union Cave, Whirl Islands, Olivine City, Cianwood City (Surfing), Route 47 (Super Rod)
Generation 5
Generation 6
Routes 124, 125, 126, 127, 128, 129, 130, 131, 132, and 133, Mossdeep City, Pacifidlog Town, Ever Grande City, Shoal Cave, Seafloor Cavern, Victory Road, Battle Resort (Surfing)
Generation 7
Generation 8
Expansion Pass DLC:
Challenge Beach, Fields of Honor, Honeycalm Island, Honeycalm Sea, Insular Sea, Loop Lagoon, Stepping-Stone Sea, Workout Sea (Surfing)
Courageous Cavern (Wanderer)
Fields of Honor, Soothing Wetlands, Forest of Focus, Challenge Beach, Loop Lagoon, Insular Sea (Max Raid Battle)
Max Lair (Dynamax Adventure)
Expansion Pass DLC:
Challenge Beach, Fields of Honor, Honeycalm Island, Honeycalm Sea, Insular Sea, Loop Lagoon, Stepping-Stone Sea, Workout Sea (Surfing)
Courageous Cavern (Wanderer)
Fields of Honor, Soothing Wetlands, Forest of Focus, Challenge Beach, Loop Lagoon, Insular Sea (Max Raid Battle)
Max Lair (Dynamax Adventure)
Routes 205, 213, 218, 219, 220, 221, 222, 223, 224, 226, and 230, Pastoria City, Canalave City, Sunyshore City, Valley Windworks, Fuego Ironworks, Iron Island, Pokémon League (Surfing)
Grand Underground – Fountainspring Cave, Riverbank Cave, Still-Water Cavern, Swampy Cave, Bogsunk Cavern (After defeating Candice)
Routes 205, 213, 218, 219, 220, 221, 222, 223, 224, 226, and 230, Pastoria City, Canalave City, Sunyshore City, Valley Windworks, Fuego Ironworks, Iron Island, Pokémon League (Surfing)
Grand Underground – Fountainspring Cave, Riverbank Cave, Still-Water Cavern, Swampy Cave, Bogsunk Cavern (After defeating Candice)
