Angular Isles

There are two islands here and they're both created out of movable blocks. You can only travel on the main island until you get your Hookshot to shoot at the tree on the smaller island. Anyways, the main island possesses a Heart Piece on top of the island. All you have to do is move some blocks and climb all the way up, but be careful, there's a Blue Chuchu waiting up top for you.