How do you get kyogre in aquas base in emerald

You don't get Groudon in aqua's base.You go to Fortree and go to the weather institute.Talk to the weather dude at the end.He will tell you where the route is.Go to the route.You will see a tunnel.Go in there.Keep going till you reach Groudon.Now eat ice cream and RROOOOCCCKKK!