Go underwater in the 8th leaders place. Then go above then water and look in the underwater place.when you see a submarine you have to go above that spot.......that's all
you get it from team aqua
After mt pyre go to mt chimney.the dudes in team agua/magmas hideout in lillycove will tell you that. After that fly back to lilly cove and swim to 128 and then find a long crevace use dive on it that will take you to the sea floor cabin.
Dive underwater and find the team aqua base (if you beaten the psychic gym)
After you find the submarine you use dive up to the surface.
You go to the city where the twins are then surf down to a gigantic dive space dive go in the caven and come up
It's a big dark spot in the sea. You need to use the TM Dive.
you will find team aqua in the under water cavern near the dive point in sootopolis
You have to dive beside Sootopolis in different spots until you find one with an entrance, then you will find the sub. dive on route 128 and look for a cavern it should be there
no where
team agua has it to awaken kyogre.
somwhere who ever wrote this is an idiot it is in route 128 i think find the longest dive point search and you will find a cave witha submarine inside dive up from there and you will find it
then all your Pokemon will die