Washington State Department of Natural Resources, Nearshore Habitat ProgramThis feature layer contains polygon feature classes delineating the floating kelp presence for each year data was collected. Polygons represent bed extent (historically referred to as planimeter), which include the kelp canopy floating on the surface and small gaps between plants (25 meter threshold for delineating discrete beds).ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/a129fd514375490793201aa5751d9a8b_16engState of Washington Geospatial Open Data PortalPublickelp2005 [Washington (State)]Web servicesWashington (State)Last Modified: 2022-08-26