Ключевые слова: abstract, algae, background, closeup, color, contaminated, danger, design, detail, dirt, dirty, drainage, ecology, environment, fresh, green, growth, grunge, industrial, lake, liquid, lush, marsh, moss, mud, nature, old, organism, pattern, plant, polluted, pond, reflection, river, sewage, shadow, shape, slime, surface, swamp, texture, thallophytic, waste, water, wave, wet,