Well, first you need to have entered the hall of fame at least once, and have 16 gym badges and the HM rock climb. then you make your way towards the Safari Zone (on the island near whirl islands) then, righ before you go in, cuck tellls you interestiing things, and leaves. if he does not do this, make sure you have the blue orb from Mr. Pokemon's house. then after that, go use surf going the wrong way to the safari zone that leads to the water.surf left (<----------)until you reach some sand. use rock climb to get to the door and there will be a hiker blocking the way. talk to him and he'll move. go inside and run forward until you see a big blue whale right in front of your character. press A on the whale and the battle starts. kyogre know waterspout, icebeam, and ancientpower but i forget what it's 4th move is. KYOGRE is weak to electr and grass. it is resistant to water, fire and steel. it's ability is drizzle. drizzle makes it rain as soon as the user enters battle. NOTE>FOR HEARTGOLD ONLY!!
you need to migrate it from sappire
You need to transfer Kyogre over from Pokemon Emerald/Sapphire, or trade Kyogre to your game from Pokemon HeartGold. If you trade the Kyogre to your game from HeartGold, you can talk to Professor Oak with the two of them in your team to get the Jade Orb, allowing you to catch Rayquaza where you found the other two.
No you do not need to catch Kyogre. You can get a Hoenn starter from a guy named Steven in Kanto.
You cannot catch Kyogre and Groudon in "HeartGold." In SoulSilver you can catch Groudon and in HeartGold you can catch Kyogre. In SoulSilver. you can get the Red Orb from Mr. Pokémon after you get 1 of the Kanto Starters from Professor Oak. In HeartGold, you get the Blue orb from Mr. Pokémon after getting a Kanto Starter from Oak. Both Kyogre and Groudon have to be from the Embedded Tower in order to get the Jade Orb so that you can get Rayquaza in the Embedded Tower.
if you r trying 2 get kyogre its useless -_- u need 1 from heartgold
To get kyogre
You do not need to show Rayquaza to anyone in HeartGold. In order to get Rayquaza, you need to show Kyogre and Groudon (from HeartGold and SoulSilver) to Professor Oak. In turn, he will give you the Green Orb. With the Green Orb in hand, you can find Rayquaza in the Embedded Tower.
In Pokemon Sapphire, you can capture Kyogre after encountering it once in the cave where you met Archie. Kyogre will flee to Sootopolis City and arrive in the Cave of Origin, north of Sootopolis City. You will need to trade for Kyogre from Pokemon Sapphire or Emerald to obtain it in Pokemon Ruby. In Pokemon Emerald, Kyogre can be found in Marine Cave when the guy at the Weather Institute announce bad weather in the sea.
After catching Kyogre, obtain a Groudon from a friend with Pokemon SoulSilver. You only need the Groudon temporarily. Talk to Professor Oak with both in your party, and Professor Oak will give you the Jade Orb to catch Raquayza.
It is in the cave where Archie of Team Aqua tries to capture Kyogre. Alas you need HM Dive to get there.
Yes, Rayquaza is a wild Pokémon in HeartGold and SoulSilver. In order to get it in your game, you need to first talk to Mr. Pokémon after you've obtained the National Dex and Professor Oak has given you 1 of his Starter Pokémon. Mr. Pokémon will give you a Blue Orb (in HeartGold) or a Red Orb (in SoulSilver.) Next you take the Orb to the Embedded Tower which is in Route 47. You'll be able to fight and capture either Kyogre (in HeartGold) or Groudon in (SoulSilver.) After catching Kyogre in HeartGold or Groudon in SoulSilver you'll need to trade for the other one and they must be caught in a HeartGold or SoulSilver game. After you get both Kyogre and Groudon in your party talk to Professor Oak in his lab in Pallet Town and he'll give you the Jade Orb. Take it to the Embedded Tower and Rayquaza will be there so you'll be able to fight it as well as catch it too.
You need to show prf. oak kyogre (obtained in heartgold) and groudon (traded from soulsilver). prf. oak gives you a jade orb and you go back to where you caught kyogre. if you don't know where that is, its near the safari zone. a hiker is standing near a cave and that's where rayquaza/kyogre/groudon is located