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Future subs might become very ‘squid-like’

The “jet age” began either in 1939, with the first flight of the Heinkel He 178, or over 500 million years ago, with the evolution of cephalopods powered by jet propulsion. Under water, jets are a less efficient means of locomotion than fin-based propulsion, but it does offer great advantages in maneuverability, as bursts enable […]

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