Octopuses have 2 eyes and 4 pairs of arms and are bilaterally symmetric. An octopus has a hard beak, with its mouth at the center point of the arms. Octopus lack an internal or external skeleton allowing them to squeeze through tight places. Octopuses are among the most intelligent and behaviorally flexible of all invertebrates.
THE COCONUT OCTOPUS Photograph by Mario Neumann. Amphioctopus marginatus, also known as the coconut octopus or veined octopus, is a medium-sized cephalopod belonging to the genus Amphioctopus. It is found in tropical waters of the western Pacific Ocean
Mimic octpus,Thaumoctopus mimicus. "This animal is so intelligent that it is able to discern which dangerous sea creature to impersonate that will present the greatest threat to its current possible predator. For example, scientists observed that when the octopus was attacked by territorial damselfishes, it mimicked the banded sea snake, a known predator of damselfishes."