Where do you get the the legendaries from on Pokemon sapphire?
Rayquaza can be caught after you beat the Elite 4 in the Sky Pillar to the right of Pacifilog. Kyogre can be caught in the Cave Of Origin after you find the Underwater cave and get Archie to unleash Kyogre's rage. Return to Sootopolis and go past the shop to the cave. Wander till you find the cave where Kyogre waits. Groudon cannot be caught in Sapphire. It needs to be traded from Ruby or Emerald. All of these need to be brought down to about 1 hp then many utra balls later you'll have them.