On the route below the Pokemon League. Rare though.
You can capture a wailord in route 230. If you can not find it you better capture a wailmer and evolve it.
completely by chance
You can go fish at route 223 and route 230 with a super rod and eventually you'll find one
route 223 or route 230
on heartgold and soulsilver level up wailmer to level 40. on diamond pearl and platinum go to route 223 and use the super rod and then you will have a wailord.
you can get dragonite,lucario,eevee,gardevoir,wailord,dialga palkia,giritina ,arceus,etc.
it can breed with seaking, gyarados, lanturn,qwilfish,octillery,sharpedo,wailord,whiscash,relicanth,luvdisc,lumineon, and all of their previous forms
You cannot catch Wailord. You can, however, catch Wailmer, which evolve into Wailord starting at level 40.
Yes.
wailord you have to evole from wailmer and relican you find in dive mode.
If you fish using a super rod you can catch a wailmer, then just level it up and Voila Wailord
any sea