Great South Bay is a large estuary located on the southern coast of Long Island, New York. It stretches approximately 20 miles long and is bordered by several towns, including Babylon and Islip. The bay is known for its rich marine life and serves as an important habitat for various species of fish and birds. The bay is also a popular destination for recreational activities such as boating, fishing, and kayaking. It connects to the Atlantic Ocean through the Fire Island Inlet, making it a vital waterway for both local fishermen and tourists. The surrounding area features beautiful beaches and parks, enhancing its appeal.