I’m skeptical because the limiting factor for a person using flippers is their l... | Hacker News

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jl2718 7 months ago | parent | context | favorite | on: 'Underwater bicycle' propels swimmers forward at s...

I’m skeptical because the limiting factor for a person using flippers is their lungs, and a propeller is less efficient for propulsion.

space_oddity 7 months ago [–]

And their cardiovascular fitness and overall endurance

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