Ключевые слова: algae, aquatic, blight, contamination, debris, dirty, ecosystem, environment, filth, floating, foam, grass, greenery, hazard, hazardous, illness, liquid, marine, marsh, messy, murk, murky, nature, plant, polluted, pollution, reflection, rubbish, scum, surface, toxic, unattractive, unclean, unpleasant, unsafe, unsanitary, waste, water, watery,