Take a quick look at this trout swimming upstream. Notice anything unusual?
You’ve probably seen something similar countless times; the fish wriggles against the currents that push it backwards, slowly making headway until it turns and ducks out of the influence of the stream. Nothing special in that.
The only thing is, this particular fish is dead.
Tags: biology, biomimicry, effectiveness, engineering, fish, fluid-dynamics, physics, swimming, and vortices
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Publication Date: 2022, Nov 30th
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http://physicsbuzz.physicscentral.com/2018/07/watch-how-does-dead-fish-swim-upstream.html?m=1