Wellfleet Harbor is a dynamic saltwater harbor located on the western, Cape Cod Bay side of the hook of Cape Cod. It serves as a central hub for boating and fishing activity, featuring a developed town marina, wharf, and pier at its head near Shirttail Point. The harbor is characterized by extensive tidal marshes, a dredged main channel, and protected bays that drain into the larger harbor. These features create a rich estuary environment that attracts significant baitfish populations, making it a prime inshore fishing destination. The surrounding area includes the Cape Cod National Seashore, with Great Island forming the harbor's western boundary, offering both sheltered bay fishing and access to more exposed waters.