trak113_0401t -- Arc coverage showing ship tracklines from survey effort HMPR-113-2004-01t

Benthic habitat polygon coverages are being created for the Olympic Coast national marine sanctuary (OCNMS).科研人员正为奥林匹克海岸国家海洋保护区（Olympic Coast National Marine Sanctuary, OCNMS）构建底栖生境多边形覆盖数据集。