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 ...

More than just aquarium must-sees, octopuses are known for being highly intelligent creatures and, at times, even friends to humans. These connections are the subjects of the popular 2020 ...

In this interactive feature, take a look at select parts of this octopus relative and learn more about how this master of deception and disguise functions.—Rima Chaddha ...

But while other octopus species have evolved longer mating arms that allow them to maintain a safe distance during copulation and avoid this fate, blue-lined octopuses have a comparatively short ...