The Temple of the Ocean King in Phantom Hourglass has 19F if I am correct. You can only do a couple floors each visit. If you get the official guide, it shows you when to visit, and a complete map of each floor. Though you can only do a few floors each visit. This is because you either don't have the fairy to open the door, you don't have the Phantom Sword, or because you don't have the item.
just make an hourglass on the door
use pots and other stuff and get hearts out of them
when you get your sward go to the north kill the monsters, go through the cave, and you are there!
In the ocean temple, Or water temple, You collect the longshot, And the Water Emblem, You also awaken the Sage, Princess Ruto who adds her powers to yours.
in the beginning of the temple of the ocean king, there is a yellow light, it will take you to the 6th floor then, proceed to the 10th floor. :) :) :)
bananas
ocean temple (3rd temple to visit) located in ocean realm which is the bottom right quadrant of your map
Actually you go to Ushus on Mercay Island instead of the Temple of the Ocean King. Then you hunt down the ghost ship after a little cutscene.
You just do. PS:Don't get caught by Phantoms!!! go to then click DS and click zelda:phantom hourglass..... there is all the cheats and walkthrough of the whole temple... Hope that helps:D
You need to go to cape claw. look around for a ruin, with a giant krazoa head. If you have already opened it, go through the ruin, and you will enter the courtyard of the temple.
in the temple of the ocean king (ps oshus is the ocean king)
In the temple of the ocean king.