4. Meet the Shell Ancestors at Flag Ponds Nature Park, Lusby, Maryland

Millennia of erosion has washed shells that lived millions of years ago from their final resting place at Calvert Cliffs State Park to Chesapeake Bay south of Annapolis. Stretching for ca. 30 miles along what used to be the bottom of the ocean during the Miocene Epoch, the Calvert Cliffs hold a rich deposit of fossilized shells. As the sea bites into the cliffs every day new fossils, among them shark teeth and shells, are washed ashore. The park opens to the public every day in summer and on weekends for the rest of the year. Within the park lies a small public beach where you can prospect for shells - be sure to stay clear of the unstable cliffs or some future beachcomber will find your fossilized remains in a million years or so!