Come a short distance from the ferry terminal on Lopez Island and head left and you will soon be near the turning for Spencer Spit State Park.  There are camping sites throughout the park, but we were just interested in wandering down to the shoreline.  It isn’t a long descent from the parking lot to be down by the water.  It appears that the high tide can drive water into the area alongside the spit but that this then gets cut off as the tide retreats.  There seemed to be some algae on the surface of the water which didn’t look great close up but, step back a bit and it seemed more appealing.