I have even more questions and please answer them even if you may bored..

To find Sky piller go back to Pacifidlog Town, and surf eastward. Surf around there and you'll find a patch of land with a cave. Go through the cave, and you'll end up in another place. Walk a bit and you'll see a tower.
Get Wailord by eloving wailmer.

1) You can't find the Sky Pillar until after you beat the Elite Four. Once you gain access to it, you'll need a Mach bike to reach the top of the tower and try to catch the most powerful Pokemon in the game, a level 70 Rayquaza.

The Sky Pillar is on Route 131, but only if you've defeated the Pok�mon League. Relicanth can be found underwater on Routes 124 and 126, while Wailord evolves from Wailmer at level 40.

Sky Piller is where you can find Rayquaza after beating the Pokemon League, you need a mach bike. Head east from Pacifilog onto route 131 along the northern edge until you find a gap leading to a small island, on the island is a cave, go throuh it until you reach a huge tower, the Sky Piller. Inside you will need your mach bike, and a lot of patience. You need to reach the top which is easier said than done. Eventually you'll get there. At the top is the one of a kind Rayquaza, and without a master ball, good luck catching him.

Ok First of all, the sky pillar is were you find Rayquesa. To get there you will need a Mach bike, a Pokemon that can surf and a master ball and if you already used your master ball the by a hole bunch of ultra balls. You will need a Lv. 45-70 Pokemon that knows peck. (peck is a good attack on rayquesa. Next fly to pacific log. Then, surf up on the right side. Keep in surfing towards the top on the right side until you find a opening. The rest of your way up you figure it out. Sorry can't spoil everything. Tip: on the cracks is what you use the Mach bike for. Hope this help. (sorry about the spelling errors if the are any)

First tou fly to paciflog town. Then you surf above the town and go right (also you must have hach bike for the tower) the first brak in the rocks you go through. Then you go left and then you are at sky piller. Unless you want to die of all of the stronk poke in there have a LOT of max repel. In there on after you go through a lot of cracked floors you will come across a place like this each e rpresents a crack e ee e. You must fall in the middle 2 cracks. You go up there and you will find the most powerfull of all poke........... RAYQUAZA. Have plenty of master balls or timer balls.wait till he gets confused and just unleash everthing you have on him. If he uses fly put out a scape goat. I would advise you save in front of if you really wont him (also if you have the time it will help you get a shiny.

I got a relicanth by going outside of sootopolis city and checking the seaweed underwater. Your bound to find one sooner or later if you check there.