Go too Jubilife city and take the west exit and surf over too canalave
Petalburg City is not in Pokemon Platinum.
Go to the move deleter in Canalva City.
You can find a Shell Bell at Hearthome City in Pokemon Platinum.
below hearthome city
Hearthome city.
In Pokemon Platinum, Diamond, and Pearl, the department store is is Veilstone city.
Eterna City
hearthome city
In Shunishoart City.
you surf
pancakes
Jubilife city