Caption: Emperor scorpions (Pandinus imperator) glowing blue after being placed under ultraviolet light in this laboratory demonstration. This phenomena occurs due to fluorescent chemicals in the cuticle making up a scorpion's exoskeleton. While a number of arthropods fluoresce, including some insects and spiders, it is especially pronounced among scorpions and whip scorpions (vinegaroons). No one is sure if fluorescence has a useful purpose and is likely just a random act of evolution. The emperor scorpion is native to much of Africa and can reach 20 cm in length.

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Keywords: animal, arachnid, arachnida, arthropod, biology, black light, close up, emperor, flouresce, flourescence, glow, invertebrate, macro, macroscopic, pandinus imperator, poisonous, sclerotization, scorpion, sting, stinger, ultra violet, ultra-violet, venom, venomous, zoology

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Scorpions glowing under UV light

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