Suō-Ōshima is the home of the emigrants from the beginning of the history of the island. The island people go everywhere around the western area of Japanese Archipelago. In late 19th and early 20th centuries, thousands of the islanders went to Hawaii and worked at sugar plantation. Suō-Ōshima is also the home of the seagoing people. In the ancient and Middle Ages, sea rovers called Ochi Suigun (Ochi fleet), Kōno Suigun (Kōno fleet), Murakami Suigun (Murakami fleet) inhabits in the western area of the Inland Sea. They had disbanded at 16th century but their descendants became the skilled fisherfolks. They had gone to Hawaii and became the foundation stone of the modern fishery of Hawaii.