Biddeford Pool, Maine

From DMJ Productions

Biddeford Pool is a large tidal pool, located off Saco Bay south of the mouth of the Saco River on the south coast of Maine. It is approximately 6 miles southeast of downtown Biddeford, to which it is connected via State Route 208. The town of Kennebunkport is 3 miles southwest, connected via State Route 9.

From Wikipedia