senior man with binoculars looking at dried out boat on tidal flats at low tide of waddensea from beach of boschplaat on

active backpack banner beach binoculars birdwatching boat boschplaat coast dutch elderly europe european flat flats friesland frisian fryslan glasswort holland island landscape leisure low man marsh mud nature netherlands panorama person recreation reserve rucksack sailboat salicornia salt saltmarsh sand sandflat senior terschelling tidal tide wadden waddensea watching water wetlands