if you mean the sun key you need the salvage arm and go to the place with a courage symbol
in the ice temple
You get it in the temple of wisdom.
phantoms are the metal guards in the ocean king temple (the legend of Zelda phantom hour glass) and in the tower (spirit tracks )
you must lower the water
Legend of Zelda Twilight princess (came out in 08 wii) Legend of Zelda Phantom hour glass (came out in 08 for ds) Legend of Zelda Spirit tracks (will come out in 09 ds/dsi)
in the water after you kill all the enemies
you go in to the profesers chamber and go in to chest da da there it is
no, you can only jump when you walk link off of an edge, but in the water diectly.
You have to equip certain combonations of parts. Mainly parts in the same set.
boomerrang,bomb,arrows,grablinghook,bombchush,and the hammer
If you are in Molida Island the second hideaway is in front of a palm tree.
Then sometimes block your way or hide something. Use the hammer to pound into the ground.