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Yoroshima

is one of the Satsunan Islands, classed with the Amami archipelago between Kyūshū and Okinawa.|

The island, 9.35 km² in area, has a population of approximately 140 persons, and is administered as the town of Setouchi, Kagoshima, on neighboring Amami-Oshima. Much of the island is within the borders of the Amami Guntō Quasi-National Park.