The large nerve cord that runs along each octopus arm is divided into segments, allowing for precise movement control and ...

Octopus fossils are rare ... The word is Greek for “head-foot” and refers to their weird anatomy, by which their arms are attached directly to one side of their head while their “torso ...

Unlike the octopus's arms, which that animal often uses to move and carry objects, the cuttlefish's eight arms are specialized for grasping prey after the cuttlefish captures it with its two ...