Swallow Reef , known as Pulau Layang-Layang ( Malay and Dusun for Island of Swallows ) in Malaysia , Danwan Jiao ( Chinese : 弹丸礁 ) in China , Celerio in the Philippines and Đá Hoa Lau in Vietnam , is an oceanic atoll of the Spratly Islands administered by Malaysia which is situated approximately 300 km northwest of Kota Kinabalu , Sabah . Swallow Reef had an original land area of approximately 6.2 hectares (15 acres), but with reclaimed land now covers 35 hectares (86 acres), measuring over 1.5 kilometres (0.93 mi) long and 200 m (656 ft) wide.
The Royal Malaysian Navy (RMN) has maintained a presence on the reef since 1983, but as with all of the Spratly Islands, the ownership is disputed, and it is also claimed by the People's Republic of China , the Republic of China (Taiwan) and Vietnam . The Philippines does not lay claim to Swallow Reef.
The island's air transport needs are served by the Layang-Layang Airport .
弹丸岛（英语：Swallow Island，意思是燕子岛；马来语：Pulau Layang-Layang ，中文译名拉央拉央岛；越南语：Đá Hoa Lau），故名石毫米，是南沙群岛的一个环型珊瑚礁，目前由马来西亚有效控制，同时中华民国、中华人民共和国及越南社会主义共和国等国亦声称对此岛拥有主权。