In the third dungeon (the lakebed temple) you can skip a large section. Once you have the clawshot go to the room with the rotating staircase, the water should be flowing on one side normally you would then go to the other side and get that water flowing but instead use the clawshot and go up on the chandelier. Once there slowly drop youself off the lide so that you are hanging by your hands from it, then let go. You will have landed on the center pillar and will be able to go on to the boss through the door.