Water Medallion

The Water Medallion is found in The Legend of Zelda: Ocarina of Time. It is one of the medallions needed to summon the sages and gain access to Ganon's tower and seal him into the Sacred Realm. The medallion is bestowed to you by Princess Ruto with her power, when she becomes the Sage of Water after you defeat Morpha in the Water Temple. To get it you must finish the Water Temple located on Lake Hylia.