Sharpedo locations — where to catch

In Lumiose City (Legends: Z-A)

Brilliant Diamond / Shining Pearl (Gen 8): Route 213, Route 222
Sword / Shield — The Isle of Armor (Gen 8): Honeycalm Sea, Insular Sea, Max Lair, Stepping-Stone Sea, Training Lowlands, Workout Sea
Ultra Sun / Ultra Moon (Gen 7): Ancient Poni Path, Poni Breaker Coast
Sun / Moon (Gen 7): Poni Breaker Coast
Omega Ruby / Alpha Sapphire (Gen 6): Battle Resort, Route 118, Route 119
X / Y (Gen 6): Kalos Route 22
Black 2 / White 2 (Gen 5): Village Bridge
Black / White (Gen 5): Village Bridge