Cayo Santiago, also known as Isla de los monos (or Monkey Island), is an uninhabited island, located at 18°09′23″N 65°44′03″W / 18.15639°N 65.73417°W / 18.15639; -65.73417, 950 m (0.6 mi) southeast of Punta Santiago, Humacao, Puerto Rico.
Read more about Cayo Santiago: Geography, Fauna