How do you find the three regis in Pokemon emerald?

Answer 1

You must solve the mystery of the Sealed Chamber first. You must catch a Relicanth(Underwater, Super Rare), a Wailord(Surf/Fish, Rare or evolve Wailmer), and a Pokemon that knows Dig(Also teach your Wailord/Relicanth Dive). Go to Pacificdlog Town and Surf in the currents. You will see a dark spot. Use Dive. You are now underwater. Go to the braille in the north end of the chamber and use Dig. The door will open. Next go to the braille in the north part of the last room and read it with Relicanth first in your party and Wailord last. That will trigger an earthquake. Go to the desert and walk south. There will be a cave with a door. Go in and find Regirock.