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These data represent benthic habitat with information on the type of substrate, the seabed geomorphology, and the depth. Multiple data sources gathered benthic habitat information beginning in the early 1800s using lead line soundings, single beam sonar, multibeam sonar, modeling, and sidescan sonar. The Nature Conservancy combined various data sources to develop these data for use in the 2007 Pacific Northwest Ecoregional Assessment. These data display types of substrate including boulder, cobble, rock, mud, sand, shell, and gravel habitats. |