You catch Groudon in Terra Cave which is located in one of routes 114, 115, 116, and 118, and Kyogre in Marine Cave which is located in one of routes 105, 125, 127, or 129. For both of these, the location is different in each game.
You don't
Yes, you can!
It is in the sky pillar
you can`t catch kyogre or groudon or both of them without linking them from sapphire, ruby or emerald version.
no
no
You have to catch Kyogre and Groudon.
its on route 115 but you have to have kyogre,groudon and rayquaza
not much only in sapphire you can only catch kyogre and in emerald you can catch both kyogre and groudon.
yes after beating the elite 4 you can catch both him and groudon.
go to the weather institute in emerald and go to the second floor to far left and a man will be standing there he will tell you where to catch groudon and kyogre.
in ruby you can only catch groundon, and sapphire you can catch only kyogre, emerald you can do both though. o and raquazya is in all 3