measuring pole, dutch waddenzee near noordkaap

biological brackish channels coast coastal currents dry dunes dutch ebb ebbtide estuaries europe european flat flats groningen habitats high holland horizon interactions intertidal intricate landscape low marsh marshes measure measuring mud mudflats multitude natural nature netherlands noordkaap outdoor outdoors outside panel panels panorama physical pole pressure protect protection reserve rise safety salt sand sandbanks sandbars sandy sea shoals shore solar speed storm system temperate temperature tidal tide tides transitional unbroken undisturbed wadden waddenzee warn warning water wet wetland wind world