In emerald, there is a slim chance you'll catch one in Route 129, but the easier way is to catch a Wailmer and evlove it.
You Can't
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.
theres a certain spot u go and if u have wailord and relicanth(in a specific order forget sorry!), you can catch the regis
Evolve a Wailmer (Level 40)
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.
No, but a 45 wailmer is basically a wailord.
It evolves from a Wailmer near level 40.
You Can't
I don't think so, but you can catch wailmer near Pacifidlog.
no you do not just the Pokemon relicanth and wailord.
go to route 129 and surf around, there is a 1% chance that one will apear
The only way to obtain a Wailord is to trade it from Ruby, Sapphire, and Emerald.
Just use Super Rod at any water (you can use your pokedex), catch at lv 30-40 Wailmer. Train the Wailmer, at lv40 it'll evolve into Wailord. I hope it's helpful
You can catch Wailord while surfing through Route 129 however it's a rare Pokemon additionally you can find Wailmer in locations such as Mossdeep City, Ever Grande City, Dewford Town and Lilycove City and then you can evolve it at Level 40 which will cause it to evolve into Wailord.
You cannot catch Wailord. You can, however, catch Wailmer, which evolve into Wailord starting at level 40.
No, u can only catch a wailmer and train it to level 40 and you got a wailord!