Olson explains that “there are many gross similarities [between the ANC and vertebrates’ spinal cords]—there is a cell body region, a neuropil region, and long tracts to connect the arms and brains in ...

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 ...

Washington — Humans may be right-handed or left-handed. It turns out octopuses don't have a dominant arm, but they do tend to perform some tasks more often with their front arms, new research shows.

Octopuses tend to keep secrets, but we've just learnt how they achieve their extraordinary dexterity. The fine control these almost-alien animals have over each of their eight arms is at least ...

A seven-arm octopus was spotted in Monterey Bay in Nov. 6, 2025; the 'rarely seen' deep-sea octopus was spotted by researchers who've only seen it four times in nearly four decades.

The eldritch, alien movements of octopus arms have captivated people for generations. These underwater cephalopods don't have just one brain but nine, with each of their arms able to act ...

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.

The large nerve cord running down each octopus arm is separated into segments, giving it precise control over movements and creating a spatial map of its suckers. Octopus arms move with incredible ...

This looks as if this could be a photo of the interior of your great-aunt’s knitting basket – but it’s actually a cross section through the arm of an octopus. The intricate neural and muscular ...