Well for a while, I thought it was anywhere but where it is; being at Lillycove was a surprise to me. Firstly you have to have surf, one of the HMS in the game, and you must go to the east aka the -> of Lillycove and maybe a bit south then north again. The cave may be blocked for a while, I am not sure why, but soon you can go in and venture through the hideout. ^_^ The only problem is is that I havn't played for a while, so I may have forgotten about the hideout at Stark Mountain. Any other hideouts are unknown to me, but I hope this information helps. The hideout at stark mountain may actually belong to team magma (what with a magma crony standing around in front of a secret door with a special magma emblem.) (=8^[)<-3
Welcome for the help!
after getting into team magmas hideout
The Team Aqua boss is in the Team Aqua Hideout northeast of Lilycove City. You will need the HM move Surf to reach the hideout.
team magmas hideout is where you go down from the cable car, east of lavaridge. aqua is a surf north away from lilycove or mossdeep, i forgot sorry.
you battle them
You find it in the team aqua hideout.
you are supposed to beat team aqua to get into in team aqua's hideout you are supposed to beat team aqua to get into team aqua's hideout in lilycove city
battle all team aqua
after getting into team magmas hideout
You can find team aqua's hideout in the east side of Lilycove City in Pokémon Sapphire.
The Team Aqua boss is in the Team Aqua Hideout northeast of Lilycove City. You will need the HM move Surf to reach the hideout.
the hideout of magma/aqua is just north of lilycove but you must use surf from the east
Team Magma`s hideout is where you go down from the cable car east of lavaridge. Team Aqua`s hideout is on the East side of lilycove, you surf northeast to get there.
team magmas hideout is where you go down from the cable car, east of lavaridge. aqua is a surf north away from lilycove or mossdeep, i forgot sorry.
In the aqua's hideout
Team Aqua's hideout
beat their boss in slaterport
Team Aqua's hideout