Ключевые слова: abstract, aerial, background, barrier, basalt, bike, biking, boulders, carbon dioxide, coast, coastal, coastal protection, coastline, concrete, cyclist, dam, den helder, drone, dutch, dutch coast, flood, friesland, frisian, global warming, green, holland, landscape, netherlands, north sea, polder, safety, sea, sea level, seascape, seaside, sheep, shore, storm, summer, tidal, tide, top view, wadden, wadden sea, waddensea, water, wind, zeeland,