Biddeford Pool is the large tidal pool, as well as the name of the community around it, located off Saco Bay south of the mouth of the Saco River.
Biddeford Pool is the site of Maine's first recorded permanent settlement, then called Winter Harbor. In the winter of 1616-1617, Richard Vines, a physician, resided here. In 1708, Fort Mary was built near the pool's entrance.
The small harbor hosts both vacationers and lobstermen. Its water level fluctuates from a large navigable body during high tide to mostly mudflats during low tide.
Wood Island Light is located about a mile offshore to the northeast.
The pool is surrounded by tall grass salt marshes that are home to a variety of birds and other wildlife. East Point Sanctuary, maintained by the Maine Audubon Society, is considered to be one of the premier birding spots on the northeast coast.
Points of interest around Biddeford Pool include the Biddeford coastal neighborhoods of Hills Beach, Fortune's Rocks, and Granite Point; and the Kennebunkport coastal area of Goose Rocks.