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[scorpions] are ... fossorial
Wildlife - scorpionsExpert: Jim Harris - 8/24/2004QuestionIs it true that some scorpions glow in the dark?Answer... scorpions do "glow" when exposed to a black light. WHY does this happen? Well, the jury is still out where that's concerned. Most likely it's an accidental side effect of the chemicals making up the exoskeleton. One popular theory is that it's a form of built-in sunscreen to protect the scorpion from ultraviolet rays. Personally, I have my doubts about this; scorpions tend to be nocturnal and I can't see any reason they would need sunblock. So, as far as I know, the situation is still a mystery.
Some protein or small molecules in cells are naturally fluorescent, this is called intrinsic or autofluorescence
...I believe that both birds and rodents can see UV light) and act as a deterrent by scaring them off or by warning them that they're poisonous in the same way that many other brightly coloured creatures clearly advertise their poisonous nature to avoid being eaten.
Is this phenomenon unique to scorpions?