Assawoman Bay (local /ˈæsəwʊmən/), once called Assawoman Sound, is a lagoon that is located between Ocean City, Maryland and mainland Delmarva. The bay is located on the northern end of the city, the bay on the southern end is called the Isle of Wight Bay. Another bay called Little Assawoman Bay extends into southern Delaware, and is geologically separated from the main estuaries, by a narrow strait locally referred to as "The Ditch" which crosses the Transpeninsular Line.