Thaumoctopus mimicus, the Indo-Malayan Mimic Octopus, can take on a variety of shapes and behaviours as defense, or to entertain others at parties.
In less than a second, it can change to imitate a flounder, a lionfish, a ray, Wilford Brimley, a sea snake, or any number of dangerous ocean-dwelling creatures.
In the Octopus family, it is second in cunning and resourcefulness only to The Pacific Northwest Tree Octopus. Though unable to write brilliant articles such as these, Thaumoctopus mimicus makes up for its apparent illiteracy through deception.
You can read more things, perhaps even factual things about this amazing cephalopod here, at inventorspot.com.