The Barnegat Peninsula, also known as the Island Beach Peninsula or Barnegat Bay Island and colloquially as "the barrier island", is a 20-mile (32 km) long, narrow barrier peninsula located on the Jersey Shore in Ocean County, New Jersey, that divides the Barnegat Bay from the Atlantic Ocean. It is a vacation destination and summer colony area and is heavily dependent on tourism, real estate and fishing. Notable communities on the peninsula include Point Pleasant Beach, Bay Head, Mantoloking, Lavallette, Ortley Beach, Seaside Heights, Seaside Park and the South Seaside Park section of Berkeley Township.