Have you ever seen a scorpion glow in the dark? YouTuber Taylor Dean has recently shared a video of what happens when her pet scorpion goes under a UV light and the result captivated plenty of people. All scorpions are fluoresce under ultraviolet light, such as an electric black light or natural moonlight. To me this is AMAZING! The blue-green glow comes from a substance found in the hyaline layer, a very thin but super tough coating in a part of the scorpion’s exoskeleton called the cuticle.