Route 4, 10, 12, 13, 17, 19, 20, 21, Bond Bridge, Boon Island, Brine Road, Cerulean City, Chrono Island, Cinnabar Island, Kin Island, Offshore Road, P2 Laboratory, Resort Gorgeous, Ruins of Alph, Seafoam Islands, Treasure Beach, Vermillion City, Water Labyrinth
Deep Sea (static), Route 19, 20, Bond Bridge, Cerulean Cave, Cinnabar Island, Deep Sea, Offshore Road, P2 Laboratory, Seafoam Islands, Treasure Beach, Evolve Horsea (Lv32)
Route 32, P2 Laboratory, Evolve Seadra (Lv50 or Dragon Scale)