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Diatom - http://en.wikipedia.org/wiki/Diatom (I had no idea what they were)

That's just awesome *promote *nature

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"diatomic arrangement is a dying art"
Oh the unintentional irony. Thanks to ocean acidification, diatoms are having a harder time surviving, and there is less and less diversity daily, so it is literally a dying art.
Beautiful.

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The duration of this video has been updated from unknown to 4:27 - length declared by oritteropo.