{"thcode":3,"term":{"code":921,"name":"reefs","parent":816,"scope":"Chains of rocks or coral at or near the surface of water. [USGS Circ 1048]"},"uf":[{"name":"barrier reefs","usewith":false},{"name":"fringing reefs","usewith":false}],"bt":[{"code":816,"name":"physiographic features","parent":1,"scope":null},{"code":1,"name":"Categories","parent":null,"scope":null}],"nt":[{"code":260,"name":"coral reefs","parent":921,"scope":"Chains of coral at or near the surface. [USGS Circ 1048]"}],"rt":[{"code":92,"name":"bars (physiographic)","parent":816,"scope":"Natural accumulations of sand, gravel, or other material forming an underwater or exposed embankment. [USGS Circ 1048]"},{"code":1010,"name":"seafloor features","parent":816,"scope":null}]}