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Habitat

Somalia contains seven terrestrial ecoregions: Ethiopian montane forests, Northern Zanzibar–Inhambane coastal forest mosaic, Somali Acacia–Commiphora bushlands and thickets, Ethiopian xeric grasslands and shrublands, Hobyo grasslands and shrublands, Somali montane xeric woodlands, and East African mangroves.

In the north, a scrub-covered, semi-desert plain referred as the Guban lies parallel to the Gulf of Aden littoral. With a width of twelve kilometres in the west to as little as two kilometres in the east, the plain is bisected by watercourses that are essentially beds of dry sand except during the rainy seasons. When the rains arrive, the Guban's low bushes and grass clumps transform into lush vegetation. This coastal strip is part of the Ethiopian xeric grasslands and shrublands ecoregion.

Cal Madow is a mountain range in the northeastern part of the country. Extending from several kilometres west of the city of Bosaso to the northwest of Erigavo, it features Somalia's highest peak, Shimbiris, which sits at an elevation of about 2,416 metres (7,927 ft). The rugged east–west ranges of the Karkaar Mountains also lie to the interior of the Gulf of Aden littoral. In the central regions, the country's northern mountain ranges give way to shallow plateaus and typically dry watercourses that are referred to locally as the Ogo. The Ogo's western plateau, in turn, gradually merges into the Haud, an important grazing area for livestock.

Somalia has only two permanent rivers, the Jubba and Shabele, both of which begin in the Ethiopian Highlands. These rivers mainly flow southwards, with the Jubba River entering the Indian Ocean at Kismayo. The Shabele River at one time apparently used to enter the sea near Merca, but now reaches a point just southwest of Mogadishu. After that, it consists of swamps and dry reaches before finally disappearing in the desert terrain east of Jilib, near the Jubba River.