there is no Phantom Island
i think you are talking about the uncharted island in the north west map under bannan island
You have to side from them you can't beat them
you hit her
go to the SE sea and get to a ship near the spot of the golden frog(if you got it yet) that has the W shape, give it to him and then go to bannan island, beat AGAIN the sea monster and go to the wayfarer house, theres a chest in there, so open it.
put a bomb on the cyclone and hit it
go west of that place on the sea chart and then you will see the harrowing island
Yes,you can find items on mercay island for phantom hourglass,in the temple of the ocean king.You can find the the southwestern sea chart (no requirements),the phantom hourglass,the northwestern sea chart (after you beat the temple of fire for both),the southeastern sea chart and the northeastern sea chart (after you beat the ghost ship for both).
Hit the tree repeatedly, after about 5 times the gem will fall to the ground.
phantom orion
Yes. As soon as you leave Zauz's Island you encounter Jolene, and you will not be able to do ANYTHING unless she is defeated.
To beat Zelda P.H., get all the Spirits, get the 3 pure metals, get the Phantom Sword, beat Bellum, sink the Ghost Ship, beat Bellum (again?) ,-oh its over then!!!