In a recent paper, researchers at the American Institute of Physics analyzed the swimming of zebrafish in a tank with particle image velocimetry and high-speed cameras. Their data showed that zebrafish are able to precisely control body fluctuations in order to generate “movable vortex pairs of high- and low-pressure regions” which then allow them to swim. The article suggests that these findings could be used as the basis for designing a “high-performance underwater bionic propeller” using flexible structures like those that the zebrafish use.
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