route 223 or route 230
You cannot catch a Wailord but you can, however, evolve a Walmer at level 45.
You do not need a Wailord to catch a Registeel in Pokemon Emerald. You may need a Wailord or any other water-type Pokemon to surf to the place where you catch Registeel, but other than that, you don't need a Wailord.
You cannot catch Wailord. You can, however, catch Wailmer, which evolve into Wailord starting at level 40.
You need relicanth and wailord to catch the regis in sapphire/ruby/emerald. You cannot catch the three regis in platinum unless you have the event Regigigas (this event has now ended). If you have the special regigigas in your party, three new caves will open up in Sinnoh and you will be able to catch the three regis.
No, but a 45 wailmer is basically a wailord.
in magma hideout
how do you catch a mewtwo on Pokemon platinum
you cannot catch the 3 regi's in Pokemon platinum you have to catch them in Pokemon emerald then transfer them to Pokemon platinum. thnx
Catch a wailmer and get it to level 40.
On the route below the Pokemon League. Rare though.
Train wailmer to level 40.
You Can't