Along the Skeleton Coast of north western Namibia a series of ephemeral rivers flow into the Atlantic and each demonstrates a very different style of interaction with the area’s sand dunes, depending on the width and height of the dune belt they have to traverse. Five different scenarios are described as reflected in the situations found in the Koigab, Uniab, Hunkab, Hoanib and Hoarusib catchments. Keywords: Dune Sand, Late Pleistocene, Dune Field, Fluvial Process, Aeolian Process.