You have to surf there from Sootopolis or Mossdeep.
Take a far left once you reach Route 129.
To get to route 124in Pokemon sapphire simply fly to pacifidlog town and use surf on the far left plank thing.then you'll ride the current till you reach it.
Only in ruby, sapphire and emerald this is possible. To get there you must get the grand prize of the lottery and have the Pokemon that won it in your party then surf east of pacifidlog town to reach there.
sky tower which is east of pacifidlog town
go to pacifidlog town and go on the strong currents. surf until you reach a white water then face to the right and use super rod
when your Pokemon likes you.
It is right of pacifidlog(mind my spelling) you surf from pacifidlog then go up and there should be a gap in the rocks keep surfing up in that direction and you should be there!
you have to go to pacifidlog town and surf then you'll run into a horsea and that's how you get a horsea.
that's only for ruby sapphire and emerald unless if you have a hacked game
Wailord's pretty rare,but surf between mossdeep and Pacifidlog untill you found it.
Route 130 is an ocean area between Sootopolis City and Pacifidlog Town.
Route 132, 133 and 134 (Left of Pacifidlog Town. Right of Slateport) You have to fish for it with a Super Rod