Behind many of these beaches are sand dune systems which provide homes for diverse forms of wildlife including plants and insects, some so highly specialised that without these dune habitats ...

Sand Dune by Plains, Kgalagadi Transfrontier Park, South Africa, Unknown artist, 2009, Hoberman Collection/UIG via Getty Images Sand Dune by Plains Kgalagadi Transfrontier Park, South Africa shows ...