There is a sailing raft on the harbor. Get a Korok leaf from a nearby Korok tree on the coast and use it to blow wind to sail the raft. Embark on the raft and move the raft with the Korok leaf ...
Korok Frond in Zelda: Tears of the Kingdom is an item that can be consumed or used in cooking meals to boost health, stamina, or add temporary status effects.