Mechanus Tannicus is a species of metallo-organic crustacean native to North America. It feeds primarily on human young, generally promiscuous females that are drawn to its UV-emitting mouth. The lining of its mouth is covered in photo-active cells that produce mild UV radiation that attracts the normally pale females. Once it has lured its prey into its mouth it draws nutrients from the skin, leaving the prey dry and leathery. However, its jaw muscles are relatively weak and so prey are generally able to escape. Mechanus Tannicus therefore must feed several times a day to sustain itself.