you get it from the elder in celestic town after you defeat Cyrus in the shrine
Go to a body of water and click A. Choose yes to surf.
Celestic town shrine
Teach it the move Surf using HM3.
Swim isn't a move. Surf is, and most water types can. If you search "Surf" on bulbapedia.org, it will give you a more accurate list.
to catch mesprit in pokemon platinum go to its cave(after beating team galatic and catching/defeating girantina)at lake verity use surf and swim to the cave in the middle. talk to mesprit and it will run away and oak will tell you after it and use your marking map to track it down. best strategy to catch it is get a pokemon with a move like mean look or make it go to sleep. also mesprit is level 50 like uxie and azelf
get the hidden move surf and swim about and you should find one
You get swim from the eldest person in celestic town and then beat heartthrome gym
you need to get a move called surf. You can only give surf to a water Pokemon
Mantine is the Pokemon that uses the swim field move.
ride around the lake with your water pokemon that has swim move. there should be cave with suicune somewhere.
you have to swim around him
Go to a body of water and click A. Choose yes to surf.
There is no such thing as a move called Swim. There is, however, a move called Surf, which is a HM, therefore impossible to get rid of, unless you use cheats.
They can move about 'swim' and find an egg to fertilize.
you swim
At the end of the Safari Zone
Swim in lake find cave go in and find ledgendary