Johnson South Reef Johnson South Reef Johnson South Reef (; ), also known as Chigua Reef in China, Gạc Ma Reef in Vietnam and Mabini Reef in the Philippines is a reef in the southwest portion of the Union Banks in the Spratly Islands of the South China Sea. It is controlled by the People's Republic of China (PRC), but its ownership is disputed by the PRC, the Philippines, Taiwan, and Vietnam. Johnson South Reef lies adjacent to the Vietnamese-controlled Collins Reef (also known as Johnson North Reef) which lies to the northwest. It is naturally above water only at low tide. Prior
Astrolabe Reef in the waves. Over 88 containers, some containing dangerous chemicals, fell into the sea and some washed ashore. The wreck broke in two during stormy weather on 7 January 2012. Astrolabe Reef Astrolabe Reef is near Motiti Island, off the Bay of Plenty coast in New Zealand. The reef, which breaks the water surface at low tide, is a renowned scuba diving spot that drops off to in different parts. The reef was named by Jules Dumont d'Urville after his ship "Astrolabe", when it nearly ran aground there on 16 February 1827. On Wednesday, 5 October 2011, the container ship