Ключевые слова: animals, aquatic, beauty, blue sea, cnidarians, danger, dangerous, delicate, ecosystem, floating, fluid, gelatinous, graceful, invertebrates, jelly, jellyfish, marine, marine biology, marine life, medusa, ocean, oceanic, oceanography, poisonous, pulsating, pulsing, sea creatures, sea nature, species, stingers, stinging, tentacled, tentacles, translucent, transparent, underwater, zooplankton,