Ключевые слова: animal, aquamarine, big, clear, croatia, ecology, ecosystem, environment, europe, fish, fish swimming, freshwater, green, greenish, group, group of fish, hiking trail, lake, life, marine, national park, natural, nature, nature park, plitvice, plitvice lakes national park, pure water, river, school of fish, swim, transparent, under, underwater, water, wildlife, wooden,