Off the shores of Lilycove City.
beat team magma in jagged pass
team magma is near the base of mt chimney and team aqua is off the coast of lilycove town
there is no team aqua on ruby. Aqua is only on Sapphire and emerald. :) :) :) :) :) :) :) :)
go to Lilycove city go up and to your right to the shour the surf to the base
Dive underwater and find the team aqua base (if you beaten the psychic gym)
beat the team aqua base
In team aqua's base
In Team Aqua's Base also you can win one from the lottery in the lilycove city dept store.
Team Aqua's secret base is located in the lavaridge. Once at the lavaridge you must ride the cable car up to the acro bike. Take the bike and go down the hill. From there you will see a cave, this is the Team Aqua secret base.
You can find it in he Magma or Aqua hideout.
u can get one in aqua layer