Territorial disputes in the South China Sea involve conflicting island and maritime claims in the region by several sovereign states, namely the People's Republic of China (PRC), Taiwan, Brunei, Malaysia, the Philippines, and Vietnam. The disputes involve the islands, reefs, banks, and other features of the South China Sea, including the Spratly Islands, Paracel Islands, Scarborough Shoal, and various boundaries in the Gulf of Tonkin. The waters near the Indonesian Natuna Islands, which some regard as geographically part of the South China Sea, are disputed as well. Maritime disputes also extend beyond the South China Sea, as in the case of the Senkaku Islands and the Socotra Rock, which lie in the East China Sea.