It's one of the following, just be aware that these instructions are for the Wii version:
HP # 17
EN : Clawshot
L : Lakebed Temple
HTO: When you have obtained the clawshot make you way to the circular room with the spinning staircase, get to the top floor of that room and claw up to the chandilier, the HP is in a chest on top of it.
HP # 18
EN : Clawshot
L : Lakebed Temple
HTO: After you get the water flowing into the spinning staircase room, move the stairs so that the water flows into the western side of the temple, enter the western room, you will see a white bridge raised cross it and stand on a switch in the tiles, then claw to a post behind the now open gate, open the chest for your HP, claw upwards to the point to get out.