The presence of the cold Benguella current on the western margin of the desert has a profound effect upon the climate of the Namib and is responsible for the frequent occurrence of advective sea fog over the desert. The frequency of fog and the accumulation of wind-blown plant detritus in those areas of the desert which are almost devoid of vegetation, provides sufficient water and energy to support a surprisingly varied endemic fauna. Certain of these animals, such as the tenebrionid beetle Lepidochora argentogrisea and the psammophilous lizard Aporosaura anchietae , have evolved a physiological dependence on fog water and are capable of a considerable degree of water storage. Keywords: Namibia, Namib Desert, Namib biology, Kuiseb River,desert beetles, Lepidochora sp., Aporosaura anchietae, Bitis peringueyi, Struthio camelus, Gerbillurus paeba, temperature, water balance, precipitation, humidity, arid environment, desert adaptation.