The Atlantic Equatorial coastal forests are a tropical moist broadleaf forest ecoregion of central Africa, covering hills, plains, and mountains of the Atlantic coast of Cameroon, Equatorial Guinea, Gabon, Republic of the Congo, Angola, and Democratic Republic of the Congo. This is rich forest home to large mammals such as western gorilla, chimpanzees, forest elephants and African buffalo, as well as many small mammals, birds, amphibians, reptiles, and invertebrates. As well as chimpanzees and gorillas other primates include black colobus monkeys and mandrills.