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Researchers at the University of Oregon have decoded the propulsion system of a siphonophore and discovered that it is built for both speed and efficiency. Whereas jellyfish and squid only have one propulsion jet, siphonophores have a system made up of a dozen or so special sacs called nectophores that contract, shooting out a stream of water that propels the organism along. When fired together they move at speed, useful for evading predators. By pulsing the sacs in sequence the creature moves more slowly but with greater efficiency. The team hopes this unique combination of speed and efficiency will inform the next generation of underwater robots propelled with a multi-thruster design inspired by nature. – Subscribe ➤ https://bit.ly/NSYTSUBS Get more from New Scientist: Official website: https://bit.ly/NSYTHP Facebook: https://bit.ly/NSYTFB Twitter: https://bit.ly/NSYTTW Instagram: https://bit.ly/NSYTINSTA LinkedIn: https://bit.ly/NSYTLIN About New Scientist: New Scientist was founded in 1956 for “all those interested in scientific discovery and its social consequences”. Today our website, videos, newsletters, app, podcast and print magazine cover the world’s most important, exciting and entertaining science news as well as asking the big-picture questions about life, the universe, and what it means to be human. New Scientist https://www.newscientist.com/