Ключевые слова: amrum, beach, coast, dunes, germany, hdr, island, kniepsand, landscape, maritime, marshland, mud flat, mudflat, national park, nature, nature reserve, nordfriesland, north frisia, north frisian islands, north sea, north sea coast, north sea island, sand, sand beach, sand dunes, sandbank, schleswig holstein, sea, wadden sea, water, world heritage,