Atlas Moth (Attacus Atlas) ~ the tip of the moth's wing is camouflaged to resemble the head of a distinctive cobra snake. When disturbed, the Atlas moth falls to the ground and writhes about to complete the illusion.
This animal, the Leafy Seadragon, is a Threatened species. They are threatened by collecting for use in Chinese medicine (and by habitat loss). Just one more example of the beautiful natural world exploited by idiotic traditional Chinese cruelty.