I can only explain from Sootopolis. You dive out of Sootopolis and surf west. Surf south on route 126 or 127 until you see a spot with a grey area where you can walk and you see a little rock in the middle.
Use dive on the south side off the platform and you will see the entrance where team Aqua is hiding.
Hope this will help you
there on the mount after the lady that sells lava cookies if you have the badge it will open automaticaly
How can you find Team Aquas secret base?
You can't
You must get the badge from your dad and when you do you get the HM surf and teach it to a Pokemon that knows how to do it. go to Lilcove and go all the way to the upper right and surf and you'll see a cave and that is Team aquas hideout!Welcome,Qajs1 (Quinton)
u have to defeat team aquas boss in the sea chamber
well you go swim then find the dark spot of the largest sea then face the same pokemon then catch it,the battle team aquas
seventh badgeto get to the city where the gym is, you have to have beaten the magmas at their hideouts and the aquas at Lilycove. then the wailmer they're training will get out of the cove. Take off surfing where the Wailmer used to be and look at your map constantly to make sure you're on the path to Mossdeep. The gym will be there, but I warn you that they are the toughest gym, and your Pokemon have to be like lv.50 to beat them. They might not look tough at first, but they ARE. Hope I helped.:)you have to find out what team magma and team aqua is doing then go ahead
You have to defeat team aquas boss in the sea chamber
No
go to Lillycove city and then go right to the beach and surf up and then you go into the cave entrance and its really the entrance to team aquas hideout!
Keep progressing in the game and you will find it. East of Lilycove city.
You have to beat team aquas leader. His red orb will glow and kyogre will wake up.