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Spider

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Uploaded by on Oct 13, 2008

Spider in the Sahara

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Education

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Standard YouTube License

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Uploader Comments (Sandskink)

  • I disagree

    It's not BECAUSE it's faster and energy saving that the spider does it.

    IT's because on a downhill slope it's simply physically capable - in the same way a tire will naturally right itself and roll if hurled off a slope.

    I don't doubt that the behavior is conserved because is doesn't harm the animal though!

  • It is indeed faster, it doubles the speed of the animal.

    It is also active rolling. In the other videos you can see how the

    spider roll on a flat plane and even a slope in upward direction.

    The problem here is to find the balance, when is it efficient to use

    this kind of locomotion. In case the animal is avoiding a predator, what counts

    is to survive, thus every trick to speed up is used.

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All Comments (12)

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  • Инкхредебелъ!

  • AHAHAHAHAHAHAHAHAHAHA LMAO @ THE GERMAN SPEAKING ENGLISH

  • Breath in now breath out

    Hands up now hands down

    Back up back up

    Tell me what you're gonna do now

    Keep rollin' rollin' rollin' rollin'

  • Why does the spider come to the man? Any wild animal I have ever held my hand out to has run away, spiders included.

  • @Sandskink

    I agree with all you have written.

    The behavior has obviously been conserved as it is beneficial, or at the very least NOT inhibitory (sort of a neutral evolutionary trait)

    but I don't think it need to have anything to do with the spider's inventing anything.

    I think what the spider does is a perfectly physical phenomena of a disk being dropped down a slope which is without obstacles.

    It's merely a way of looking at the phenomena. I don't think it need be interpreted as effort.

  • inkkrrrrredible

  • 0:42 XD ich finds echt lol

  • do a barrel roll

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