The Happy Face Spider( Theridion grallator) is endemic (meaning only exists in) to Hawaii, particularly around Maui, Molokai and Lanai. In Hawaiian it is called the nananana makakiʻi (face-patterned spider), and it plays a role in many children’s stories and books around the islands.These cute little guys live on the underside of leaves. It is thought that the coloration pattern is part of a camouflage, but the smile itself is not really a survival mechanism, as it does not seem to have any major predators. There are some organisms, however, that have false eyes and faces as a survival mechanism. For example, the four eye butterfly fish have a false eye just above its tail. Scientists believe that it allows them to a chance of escaping predators. Predators normally go for the head of their prey. The four eye butterfly fish has its real eye concealed by line. This confuses the predator, which then goes for the false eye rather than the head, giving the fish a chance to escape. This is also seen in the Owl butterfly, which has false eyes on its bottom wings.
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