Stroll along a Cape Cod beach in late August and summer is in full swing. Walk past the sun shelters and towels to the water’s edge. There, on an outgoing tide, is where to find the sea’s treasures.
https://siris-libraries.si.edu/ipac20/ipac.jsp?&profile=liball&source=~!silibraries&uri=full=3100001~!304179~!0#focus ...