Long Island Sound is a busy waterway that extends southwest between Connecticut and Long Island. This arm of the Atlantic Ocean is nearly 110 miles (177 kilometers) long. It is 21 miles (34 kilometers) wide at its widest point. The sound narrows to a width of 2/3 mile (1.1 kilometers) at its west end, where it meets the East River. The East River connects the sound with New York Bay.
