Ключевые слова: adaptation, algae, amazing creatures, biome, blue, bottom relief, charm, colorful, colorful jellyfish, corals, depth, ecology, ecosystem, environmental problems, establishing balance, evolution, fish, jellyfish, light, lightness, marine invertebrates, marine life, marine sciences, microcosm, movement, natural environment, nature, nature conservation, nutrition, ocean, research, response to the environment, sea, seascape, smiles, swimming, symbiosis, the wonder of nature, tourism, tropical climate, underwater beauty, underwater creatures, underwater world, water, water adventures, water balance,