The Washington State Spatial Prioritization Data Viewer has been compiled to assist the State in prioritizing seafloor mapping data needs along Washington’s Pacific coast as part of their marine spatial planning process. This viewer contains an inventory of existing seafloor mapping surveys and other relevant data layers (e.g. shoreline, human use, marine boundaries, marine life, oceanography, and benthic habitats) that can be utilized by planners, managers, and scientists to prioritize areas of the coast for additional seafloor mapping data collection. This viewer contains a range of information on the type, extent, year, and source of a multitude of seafloor mapping surveys conducted along the outer coast. We request your feedback on any additional surveys which are not included.