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Jellyfish Could Be Ocean's Most Efficient Swimmers

Those jellyfish you see seemingly floating and bobbing along with the waves have a secret. New research shows the gelatinous creatures are among the best swimmers in the ocean, which could be an important reason they have been so successful as a species. “We find that jellyfish exhibit a unique mechanism of passive energy recapture, which can reduce metabolic energy demand by swimming muscles,” write the researchers in the journal Proceedings of the National Academy of Sciences. “Contrary ...

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