Biscayne, << bihs KAYN, >> National Park lies in the upper Florida Keys near Miami. It includes narrow islands that separate Biscayne Bay from the Atlantic Ocean. It also includes the adjoining waters and submerged lands of the bay and ocean. Mangrove forests line the park’s western shore. The islands have many tropical plants and are a nesting place of rare birds. The park includes the northernmost living coral reef along the Atlantic coast. The area was authorized as a national monument in 1968 and became a national park in 1980. For its area, see National Park System (table: National parks) .