Ключевые слова: algae, aquatic, background, beautiful, blue, bog, bulrush, cloud, color, day, duckweed, ecology, environment, flora, grass, green, growth, lake, landscape, marsh, nature, organic, organism, outdoor, park, plant, pollution, pond, reed, reflection, river, scene, scum, season, shore, sky, slime, spring, stagnant, summer, surface, swamp, terrain, texture, tree, view, water, weed, wet, wilderness,