man is walking with gumboots on the wadden sea, north sea on island romo in denmark, foreshore and mudflats on the coast

beach boot boots boy coast coastline construction cost danish denmark ebb equipment feet foot foreshore gumboots hiking industry intertid intertidal island jeans leg legs low male man mud mudflats nature north outdoors people person riverbank romo rubber sand sea shoe shoes surface tide travel wadden walking water wetland work zone