Geography of Taiwan its narrowest. Part of the continental shelf, the Strait is no more than deep, and has become a land bridge during glacial periods. To the south, the island of Taiwan is separated from the Philippine island of Luzon by the -wide Luzon Strait. The South China Sea lies to the southwest, the East China Sea to the north, and the Philippine Sea to the east. Smaller islands of the archipelago include the Penghu islands in the Taiwan Strait west of the main island, with an area of , the tiny islet of Xiaoliuqiu off the southwest coast, and Orchid Island
Green Island, Taiwan Green Island, Taiwan Green Island (Mandarin Pīnyīn: "Lǜ Dǎo"; Hokkien POJ: "Le̍k-tó") is a small volcanic island in the Pacific Ocean about off the eastern coast of Taiwan. It is at high tide and at low tide, making it the Republic of China's seventh-largest island. The island is administered as , a rural township of Taitung County and one of the county's two offshore areas (the other being Orchid Island). The island once served as a penal colony for political prisoners during Taiwan's period of martial law, although today it is primarily known as a tourist hotspot. The name "Green