This web application gives interactive access to 2000-2019 seagrass monitoring data from selected sites in greater Puget Sound. Seagrass species monitored include eelgrass, surfgrass and Zostera japonica.  Underwater video is collected along transects and interpreted for species presence.  This data is used for site-specific purposes as well as estimating the total area of eelgrass in greater Puget Sound.  The estimates of total eelgrass area are the basis of the eelgrass vital sign reported by the Puget Sound Partnership.Eelgrass is a valuable aquatic plant in the marine nearshore that provides spawning grounds for Pacific herring, out-migrating corridors for juvenile salmon and importing feeding grounds and foraging habitats for waterbirds such as the Black Brant and Great Blue Heron.  Eelgrass also improves water quality by reducing particle loads, acts as a sink for nutrients, and stabilizes sediment, thus counteracting erosion processes.