Once you get the Zora Tunic in The Legend of Zelda: Ocarina of Time remake, you'll be ready to explore the waters of Hyrule. Before you obtain this tunic, the only way to explore underwater is by diving, and even if you have the Golden Scale, Link always has to come up for air. However, after you get the tunic — and a pair of special boots — you'll be able to freely walk under the water. Besides, you must have the tunic to progress the story and complete the Water Temple.
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