The Snohomish River basin nearshore habitat encompasses the tidal and shallow sub-tidal areas of Puget Sound and areas that immediately influence them - from the tops of coastal bluffs out to a depth of 30 meters (the photic zone). The nearshore extends from Mukilteo to Kayak Point and around Hat (Gedney) Island. The water bodies in the nearshore area include Port Gardner, eastern Possession Sound, southern Port Susan, the mouth of the lower Snohomish River channel, the west shore of Jetty Island including the expanding Snohomish River Delta, and the area around Hat Island.