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
Orford Reef Orford Reef Orford Reef is a reef located off Cape Blanco on the southern coast of Oregon in the United States. The reef is situated around eight small rock islands: Best Rock, Long Brown Rock, Unnamed Rock, Square White Rock, Seal Rock, Conical White Rock, West Conical Rock, and Arch Rock. The reef includes forests of bull kelp up to 100 feet (30m) long, which provide protective habitat for numerous animals, including the bat ray, big skate, broadnose sevengill shark, cabezon, kelp bass, leopard shark, spiny dogfish, kelp greenling, plumose anemone, and numerous species of rockfish. The reef also supports