Golden Scale

The Golden Scale allows Link to dive deeper than he could with the Silver Scale. With it he can dive 9 meters. It is obtained in Ocarina of Time by catching a a record-breaking fish weighing more than 15 pounds at the fishing hole in Lake Hylia as an adult. With it Link can dive to the bottom of the water in the Lakeside Laboratory and receive a Piece of Heart. The item is completely optional and is not needed to complete the game.