3/17/16 – SCP538, “Shadow Spiders”
SCP-538 appears to be animate shadows of an unknown species of spiders. SCP-538 appears to “feed” off of the shadows of other living objects, and will move to the nearest shadow cast by a living organism. To “feed”, SCP-538 does no more than attach itself to the shadow of its host in such a manner that its own shadow is not obscured. Through this manner, a single specimen of SCP-538 can grow up to approximately 15 square centimeters in size. Feeding after this point appears to simply maintain this size; the whole process has so far proven to be harmless to the host. While a specimen can attach itself to an inanimate object to feed, it will slowly atrophy and decrease in size over time. Only when connected to the shadow of a living organism can SCP-538 thrive.