Marine animals swim in circles

Marine animals swim in circles

Credit: Narazaki et al. / iScience

Japanese scientists have stumbled on a mysterious phenomenon: sharks, turtles, penguins and various marine mammals all swim in circles.

They observed animals repeatedly move in consecutive circles at relatively constant speeds, reporting their discovery in the journal iScience. The circles they swim in vary in size depending on species, with diameters ranging from a few centimetres to several metres.

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Published by Cosmos.

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