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    Home»Nature»How 22 diverse ocean creatures ended up using the same swim stroke
    Nature

    How 22 diverse ocean creatures ended up using the same swim stroke

    rokurBy rokurApril 28, 2015No Comments1 Min Read
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    According to new research, many marine animals may have independently learned to optimize their swim strokes in the same way.

    A tiny cuttlefish and a huge stingray don’t look like they have much in common. Genetically and morphologically, they don’t. But even though their bodies are totally different shapes, it seems that both follow the same mechanical rules when they swim: Their long fins both ripple lengthwise and oscillate from side to side. And for both, the length of one undulation during swimming divided by the height of the sideways movement is always a ratio of around 20.

    In fact, at least 22 marine animals have exactly the same ratio.

    Read Washington Post

    Photo by Kačka a Ondra

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    rokur
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    Production engineer and certified swim coach. Full-time IT consultant, spare-time swimming aficionado. 2 sons, 2 daughters and a wife. President of the Faroe Islands Aquatics Federation. Likes to run :-)

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