catch or get a shellder and use water stone
There is a rumor you can find one in whirl islands, but the sure way to go is catch a sheller and use an water stone on it, im trying to find a shiny shelder atm shiny cloyster would be epic
In the whirl islands with the silver wing
Use an escape rope
Lugia
It unlocks Lugia in the Whirl Islands. He is at the bottom.
it for geting to lugia in whirl islands to get it you have to be in kato
I have gold and silver, which almost is the same as crystal (the same generation). In those games, whirl islands is east of Cianwood City. You can go on the pokegear and look at the map. If you surf east from Cianwood City there are a couple islands there. It is hard to find whirl islands, but as you land on an island, look on the map and see if you are on whirl islands. If your not, try more islands. It is not that hard, but dont forget to have a pokemon with you that knows whirlpool.
The Whirl Islands are located in the sea between Olivine and Cianwood City. They are northeast of Cianwood and Southwest of Olivine. In the Whirl Islands, Lugia awaits at level 45.
Whirl Islands only exist in Gold, Silver, Crystal, HeartGold and SoulSilver.
To get mantine in crystal and gold surf around the whirl Islands
You can find Luigia at the Whirl Islands, you have to go quite deep.
Once you have it, you can catch Lugia on Whirl Islands. It's the one at the bottom.