There are many Water Type Pokemon in Pokemon Platinum, however, there is only one strongest one. That Pokemon is Palkia.
Palkia is one of the Main Storyline Legendaries in Pokemon Pearl, it is a Water/Dragon Type.
If you are looking for the strongest Non-Legendary, your best bet is Gyarados.
Any exceptions?
Chat with our AI personalities
I think fire and flying are good against nature type pokemon!!
it is either overheat or blastburn
Torterra is the strongest Grass Pokemon in Diamona and Pearl.
If you include hms, and mean all around strongest, use surf.
Gyarados is a Water and Flying type Pokemon.