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
State of the Coast Resources The Coast - Our Nation's Economic Engine Recreational Fishing - An American Pastime Commercial Fishing - A Cultural Tradition Ports - Crucial Coastal Infrastructure The Overall Health of Our Nation's Coastal Waters Invasive Species Disrupt Coastal Ecosystems and Economies Coral Reef Ecosystems - Critical Coastal Habitat Nutrient Pollution and Hypoxia - Everything is Upstream of the Coast Vulnerability of Our Nation's Coasts to Sea Level Rise U.S. Population in the 100-year Coastal Flood Hazard Area Federally-Insured Assets along the Coast State of the Coast The State of the Coast is a website launched by the National Oceanic and Atmospheric