"Alright Froakie, use Surf! ...Ok, we're in the middle of the ocean now! A little more and we'll get to genericoceantown!"
"Go, Torkoal!" *throws the poké ball to the water* "...Torkoal?"
Just think they're created by the poké balls...which...doesn't really explain why wild pokémon have one, but you shouldn't be worrying about that.
You do realize if you were using surf the circle would be a patch of water anyway, right? --- Pokemon Black FC: 4470 0364 4689 "Have you actually seen the scene in question? It needs some crackers to go with its cheese." - Poppadop
We've seen the battle circles already in X/Y videos. I agree that in 3D, they look terrible, and I've never liked them. --- "The most important thing is to never stop questioning." -Albert Einstein. Xbox Live: AlteraLateralus