South Sentinel Island is one of the Andaman Islands in the Bay of Bengal. It is 1.6 km long northeast to southwest and up to 1 km wide. At only 1.61 km², it is much smaller than its counterpart North Sentinel Island and is currently uninhabited. The island belongs to the Port Blair tehsil in the South Andaman administrative district, part of the Indian union territo…South Sentinel Island is one of the Andaman Islands in the Bay of Bengal. It is 1.6 km long northeast to southwest and up to 1 km wide. At only 1.61 km², it is much smaller than its counterpart North Sentinel Island and is currently uninhabited. The island belongs to the Port Blair tehsil in the South Andaman administrative district, part of the Indian union territory of Andaman and Nicobar Islands, neighbouring North Sentinel Island.