This is a Camouflage leafy insects, in nature, there are many species, they rely on themselves, to prey, so that they are not found, you do not carefully look, really can not find them, because these insects Too like, like a leaf tree, and the surrounding environment exactly the same, I have seen some leaf insects, if they often eat green leaves, the body is green, if eat Red leaves, they will become red, even the shape are the same
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Bali Phasmida Phylliidae Insect (Walking Leaf)
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Humans learn a lot from animals and plants, the battlefield, artillery, tanks, airplanes need to Camouflage, if the best stealth can :) I believe that humans will soon develop advanced materials,Science fiction scene soon became a reality