You get it from Cynthia's Grandmother in Celestic Town.
You need the Badge from Pastoria City to use it outside of battle. (Beat Crasher Wake!)
Get the HM Surf then teach it to a pokemon.
You get Surf from the elder of Celestic Town.
Surf is HM #3. :-)
you surf
On water.
A gymleader i think...
Yes, it can.
Yes creselia is is in Pokemon Platinum.
vulpix is not in Pokemon platinum version.
beat the fifth gem leader than you get the Hm surf
You have to beat the Gym Trainer Wake and he will give you surf. Then you have to surf there.
Go to a body of water and click A. Choose yes to surf.