You don't, kyogre is in the cave of origin
you find wailmer then you beat the game and evolve torchic then u go to a shiny cave he will be there with kyogre deoxys and mew
in my butt
map #3
in professer rowans breifcase
There is a map guide that shows you where you can catch everyone.
go on map 6 to find shinydeoxy even you find a regiagas
Regigigas is at the snow point temple but you have to have regirock regice and registeel
Kyogre is only in Pokemon
we should go on map8 to get articuno in pokemonlake
In ruby u can't find Kyogre only Groundon in sapphire u find Kyogre in Lost Cave on the wild see
www.pokemonlake.com
any where after ur selected Pokemon are at lv.100