Islands 1-3 become accessible after defeating Blaine in Cinnabar, with the rest being avaliable after beating the Elite 4 and getting 100 Pokemon in your Pokedex. If you visit Celio on Island 1 he will give you a mission to complete and the Rainbow Pass for Islands 4-7.
beat 7th gym, do the stuff for the pokemaniac and his friend (who will ask you to save his daughter) then beat last gym and elite four get ruby, or some gem, give it to computermaniac get pass to every island
Whirl islands are in the johto region which is not in firered.
Explore, catch pokemon, train your pokemon.
in 4-7 islands
seafoam islands
you cant
The Sevii Islands(islands 4,5,6,7)
Articuno is in the Seaform Islands
in cinabbar islands
Inside Seafoam Islands.
Seafoam islands.
no
you get articuno in seafoam islands