Jellyfish aren't really fish at all! These spineless sea-dwellers use their umbrella-shaped bells to swim, while their long tentacles sting prey. Learn what they eat and how they survive in the big ocean.Jellyfish aren't really fish at all! These spineless sea-dwellers use their umbrella-shaped bells to swim, while their long tentacles sting prey. Learn what they eat and how they survive in the big ocean.
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