In Pokémon Yellow, you can obtain the Surf ability by using the Surfing Pikachu feature. To get Surf, you need to participate in the Pokémon Stadium game for the Nintendo 64 and win the Pikachu Cup. Once you have a Pikachu that knows Surf, you can transfer it back to Pokémon Yellow using the Game Boy Transfer Pak.
You need a water Pokemon and the surf HM
HM03 Surf can be found in the Safari Zone in Fuchsia City.
the Secret House in the Safari Zone
Cut, Fly, Surf, Strength, Flash.
use a Pokemon to get to use "surf" then get to cinnibar island and there you go.
You don't need surf, just the ticket which you get from Bill after helping him change back from a pokemon into a human.
The 7th gym leader in Pokemon yellow is in Cinnebar Island, which is south of Pallet Town. You need a Pokemon with Surf to get there.
Surf (HM4) is found at the final zone in the Safari Zone in Fuschia City
go to the hut at the end of of the Safari Zone in Fuchsia city. he will give you surf.
Surf along Route 6, but they are quite rare...
Surf south from Pallet Town to Cinnibar Island.
You can not swim in any of the Pokemon games. You can Surf, however, in EVERY game.