group of sea winkle or periwinkle on rock at low tide. edible seashell

atlantic baixas close coast coastline common crowded eatable edible food fresh freshness galicia gastropods ingredient landmark littorea littorina low many marine mollusk nature nutrition ocean outdoor pattern pebble periwinkle raw rias rock rocks sea seafood seashell shell shellfish shore shoreline snail spain tide tile water wave wet wild wildlife winkle