you have to try your best good luck, it was easy for me anyway, if your stuck just go on YouTube, it will show you.
beat the the dark temple floor
shut up sorry but no one can answer that
ocean temple (3rd one)
This will answer evrything for you: http://www.zeldadungeon.net/Zelda13-spirit-tracks-walkthrough-06.php
ocean temple (3rd temple to visit) located in ocean realm which is the bottom right quadrant of your map
If you get the letter from the locomo, youu blow your whistle in the order of the letter.
go to the highest floor you can in the tower of spirits and beat it
left, right, top, bottom
phantoms are the metal guards in the ocean king temple (the legend of Zelda phantom hour glass) and in the tower (spirit tracks )
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. :) :) :)
The thing is, you can't but, you can get a hookshot in the water temple and two hookshots in the sky temple.
first use the whip on the statue to get the helicopter up then tap the helicopter but hold it. dont let the whip go