Ключевые слова: aquatic, aquatic life, beauty, calm, clarity, clean, clear, colorful, conservation, depth, ecology, environment, fresh, fresh water, geology, lake, natural, natural pattern, nature, peaceful, pebbles, pristine, purity, reflection, river stones, riverbed, rocks, serene, smooth, smooth stones, stones, tranquil, tranquility, transparent, underwater, waters, zen,