The refuge is home to the endangeredKey deer, a subspecies of the white-tailed deer that is endemic to the Florida Keys and has a current population of around 800 animals. 21 other threatened and endangered species of plants and animals are also found on the refuge.
Geography
The refuge which includes 2,400 acres (970 ha) of upland forests, 5,100 acres (2,100 ha) of wetlands, and 1,050 acres (420 ha) of marsh. 2,278 acres (922 ha) of the refuge have been designated as a wilderness area.