island of borkum in waddenzee, germany

biological bird birds boat borkum boschwad brackish channels coast coastal dry dutch ebb ebbtide energy environment europe european fauna ferry flat forage foraging german germany groningen gull gulls habitats holland horizon interactions intertidal island landscape low marsh marshes mill mills mud mudflats natural nature netherlands outdoor outdoors outside panorama physical power reserve salt sand sandbanks sandbars sandy sea shoals shore tidal tide turbine turbines undisturbed vessel wadden waddenzee water wet wetland wind windmill windmills