Octopus
The octopus is a soft-bodied, eight-limbed mollusc of the order Octopoda. Around 300 species are recognised, and the order is grouped within the class Cephalopoda with squids, cuttlefish, and nautiloids. Octopuses are among the most intelligent and behaviourally diverse of all invertebrates. They are eaten and considered a delicacy by humans in many parts of the world.