you want to beat them in 2ft. of that ,,libary,, its museum.
In the Aqua Hideout.
in aqua hideout 90%
In team aqua's hideout
every where team aqua is or in snoop dogs house.
No, you cannot be a member of Team Aqua / Team Magma in Sapphire.
Google Pokemon sapphire walkthrough and search through a walkthrough
Team Aqua's base or hideout is found east of Lilycove City.
mabye
Somewhere in the aqua hideout (you have to be in lilycove city)
yfyufyyreu
team aqua hideout at lilycove city
take the meteorite