piles of sargassum seaweed decomposing in sun.

rock geology nature wilderness water boulder tree blue sculpture art winter mountain snow ice plant terrain stream flower formation piles sargassum seaweed decomposing sun collected beach use fertilizer povoa varzim portugal organic background bag bales beach collecting compost composting decomposing decomposition dirty drying dump ecology environment environmental fertilize fertilizer green heap natural nature old organic outdoor outdoors outside pile plastic recycle recycling renewable rotting rubbish sand sargassum sargaço sea weed seaweed sun waste