Octopuses and their arms are still a bit of a mystery. Not because scientists don't know how they work; their arms are boneless hydrostats, made up of groups of muscles working together, and capable ...

Octopuses typically have eight limbs that are called arms. Because the limbs have suction cups for its entire length, they are called arms instead of tentacles. Octopus arms can help the sea creatures ...

Octopus arms are one of the most flexible structures known in all of the biological world. Their agility is so extraordinary that robotics researchers want to learn the secrets behind their movements, ...

Scientists discovered that octopuses use their limbs to sample the microbiomes on the surfaces they touch. By Sofia Quaglia Sofia Quaglia earlier reported on fish that use their legs (yes, legs) to ...

Octopuses aren’t just flexible—they’re astonishingly strategic. A new study reveals how their eight arms coordinate with surprising precision: front arms for exploring, back arms for locomotion, and ...

The octopus is a striking creature. Their most defining feature, of course, is their eight arms. A new study of octopuses has now documented exactly how those eight arms are used in the wild.