The Namib Desert lies along much of the coast of Namibia, north of South Africa. This coastal desert is a land of two halves. The northern part, from the Kuiseb River to the Angolan border, is mostly a flat gravel desert. The southern part, from the Kuiseb River to the South African border, mainly consists of sand dunes (called the Namib 'Sand-Sea'). The climate of the Namib Desert is unique. The coast of the Atlantic Ocean that lies next to the desert is regularly covered with fog, which rolls in from the sea overnight and can travel inland for up to 60 km. Many of the coastal desert species, both plants and insects, are specially adapted to capture fog water. When you look at the Namib desert, the gravel plains and sand dunes appear to be hot, dry and empty wastelands. Nothing could be further from the truth! Both the plains and dunes are teeming with life! Some of this life is invisible to the naked eye; some of it is hidden by camouflage or by burrowing; and some of it is large and obvious.