The Coronado Islands (Islas Coronado or Islas Coronados) are a group of four islands off the northwest coast of the Mexican state of Baja California. Battered by the wind and waves, they are largely infertile and uninhabited except for a small military detachment and a few lighthouse keepers. The islands lie between 25.6 and 32 kilometers south of the entrance to San Diego bay, but only 13.6 kilometers from the Mexican mainland.