yellow water-lily bush in fast current on bed of freshwater river with clear water and dense vegetation

air algae aquaflora aquaplant aquatic background balance bed biotope brandybottle brook bubble bush challenge clear climate coldwater colorful contrast crystal current day dense detritis disaster ecology ecosystem environment environmental europe fast flora flow freshwater gravel green ground human impact lake litter lutea moderate movement nature nuphar plant podillya poor ray river sand season shallow stream strong substrate summer sun sunny temperate tender ukraine underwater vegetation visibility vulnerable water waterlily wave wonder yellow