Miami Beach is positioned between Biscayne Bay and the Atlantic Ocean.
Miami ( [ maɪˈæmi ] [ miˈami ] ) is a seaport city at the southeastern corner of the U.S. state of Florida and its Atlantic coast . Miami Beach, Florida . The municipality is located on natural and man-made barrier islands between the Atlantic Ocean and Biscayne Bay , the latter of which separates the Beach from Miami . The Historic District is bounded by the Atlantic Ocean on the East , Lenox Court on the West , 6th Street on the South and Dade Boulevard along the Collins Canal to the North .