African manatee in both coastal areas and isolated inland areas, genetic evidence suggests no significant differences between the two populations. The African manatee falls under the genus "Trichechus" with only two other species, the Amazonian manatee and the West Indian manatee, which are also sirenians. African manatees can be found in West African regions: Angola, Benin, Cameroon, Chad, the Republic of the Congo, the Democratic Republic of the Congo, Côte d'Ivoire, Equatorial Guinea, Gabon, The Gambia, Ghana, Guinea, Guinea-Bissau, Liberia, Mali, Mauritania, Niger, Nigeria, Senegal, Sierra Leone, and Togo. Manatees are found in brackish waters to freshwater: in oceans, rivers, lakes, coastal
Benin north to the Atlantic Ocean in the south is about . Although the coastline measures , the country measures about at its widest point. Benin shows little variation in elevation and can be divided into four areas from the south to the north, starting with the low-lying, sandy, coastal plain (highest elevation ) which is, at most, wide. It is marshy and dotted with lakes and lagoons communicating with the ocean. Behind the coast lies the Guinean forest-savanna mosaic-covered plateaus of southern Benin (altitude between ), which are split by valleys running north to south along the Couffo, Zou, and