{"thcode":61,"term":{"code":159,"name":"reef","parent":106,"scope":"used for 1) shallow-water biotic reefs such as coral reefs, 2) biotic reefs preserved in the geologic record, and 3) rocky outcrops on the sea floor that create a hazard to navigation."},"uf":[],"bt":[{"code":106,"name":"landform","parent":94,"scope":"a geomorphic feature recognized as distinct from the surrounding terrain."},{"code":94,"name":"feature type","parent":1,"scope":null},{"code":1,"name":"Marine Realms Information Bank (MRIB) keyword categories","parent":null,"scope":null}],"nt":[{"code":160,"name":"barrier reef","parent":159,"scope":"coral reef separated from the shore by a lagoon."},{"code":161,"name":"fringing reef","parent":159,"scope":"coral reef attached to the shore."}],"rt":[]}