In the jonto
whirl islands
First, travel to Olivine City. Then, surf Southwest of Olivine to get to a Whirlpool. Then, use a Pokemon with Whirlpool to go across the whirlpool to get into the Whirl Islands.
Whirl Islands only exist in Gold, Silver, Crystal, HeartGold and SoulSilver.
Lugia is located in the Whirlpool Islands in Johto.
In the ice cave after the first ice maze there is a small ice maze and at the end there is the HM for whirlpool
ice path
Whirlpool Islands in Johto. you need the HM Whirlpool to get to it because its protected by 4 whoolpools.
it is in icecave near mahogany town
You'll need the HM Whirlpool and teach it to one of your Pokemon and you can pass the Whirlpools blocking Whirlpool Cave.
to get the legendary (lugia) you must go to the whirlpool islands and on one of the islands you will find lugia
If I remember correctly they are talking about is Lugia (the Pokemon on the cover of the game). It is located at the whirl Islands east from Cianwood Isle, you need to teach a Pokemon the HM Whirlpool to get there.
you have to get hm whirlpool