Abstract
Iou-Torishima is located at the most north part of the Okinawa-Islands, just beside the Amami Islands Group. Today Iou-Torishima has been uninhabited island by the escape of islanders from many volcanic activities and famines. This article considers ①geopolitical story in the age of Ryukyu Kingdom, Okinawa prefecture and the present, ②livelihood of islanders at Iou-Torishima in each age and stage, ③decision making process of their immigration to Kume-jima, which lies far from 200km distance, ④community management, uniqueness and change of their life-style at the new immigrated village, ⑤different process of immigration to the Micronesian islands from the other islander of Kume-jima, and ⑥ academic significance to make research on the remote uninhabited island.
