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Jellyfish are fascinating creatures belonging to the Cnidarians category, characterized by their gelatinous bodies and stinging cells. They possess a unique radial symmetry, with their bodies typically composed of a bell-shaped medusa stage that houses their sensory and reproductive organs, and trailing oral arms or tentacles used for capturing prey and defense. Jellyfish exhibit various forms, sizes, and colors, ranging from the tiny Turritopsis dohrnii to the colossal Lion's Mane jellyfish. They are primarily marine animals, inhabiting diverse environments such as open oceans, coral reefs, and even polar regions. As invertebrates, they lack a true backbone or any other internal supporting structure, relying on their hydrostatic skeleton for movement through the water column. Their pulsating movements propel them gracefully through aquatic habitats while capturing prey like plankton and small fish using their tentacles lined with venom-filled nematocysts. Jellyfish play an essential role in food webs, serving as both predators and prey for other marine organisms. They contribute to nutrient cycling by consuming large quantities of zooplankton and releasing waste products back into the water column. Moreover, jellyfish blooms can significantly impact local ecosystems, potentially leading to fluctuations in species abundance and altering food chain dynamics. Overall, Jellyfish represent a captivating subgroup within the Cnidarians category, displaying intriguing adaptations that allow them to thrive in various aquatic environments as successful predators and contributors to marine ecosystems.