Aerial shot of Marram Dune Grass on a summer day at the Belgian coast

marram marram grass coastal sand dunes dunes beachgrass de panne dune bent grass blankenberge knokke middelkerke koksijde sand grasses nieuwpoort de haan hill westende oostende shoreline coastline perennial grass ammophila arenaria beach landscape ammophila grass environment zeebrugge nature storm scene scenic dense belgium idyllic belgian aerial drone wenduine reserve plant skyline flood european europe mariakerke protect protection