You can find Seels all the time in the Whirl Islands
Chat with our AI personalities
On Whirl Islands.
You can get a Seel in Pokemon Pearl by finding it in the water on route 226.
in wrpl islands (down at city with lighthouse)
There are a few places you can find a dewgong in on Pokemon Platinum version. You can find him on Victory road, route 226, and route 230. If you catch a Seel you can also get Dewgong by leveling Seel up to level 34.
Seel evolves into Dewgong at level 34.