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"arms"4 articles archived since 1845

Tiny Hairs Help Octopus Suckers Stick

Just when you thought octopuses couldn’t get any weirder: It turns out that their suckers have an unexpectedly hairy grip. Octopuses can form an impressively tight grip—even on a rough surface.

May 19, 2014 — Katherine Harmon Courage
How Octopus Arms Regenerate With Ease

How Octopus Arms Regenerate With Ease

Like a starfish, an octopus can regrow lost arms. Unlike a starfish, a severed octopus arm does not regrow another octopus. But the biological secrets inside their arm regeneration feat do hold the promise of learning more about how we might better regenerate our own diseased or lost tissue.

August 28, 2013 — Katherine Harmon
Even Severed Octopus Arms Have Smart Moves

Even Severed Octopus Arms Have Smart Moves

The eight wily arms of an octopus can help the animal catch dinner, open a jar and even complete a convincing disguise. But these arms are not entirely under the control of the octopus’s brain.

August 27, 2013 — Katherine Harmon

Why Don’t Octopuses Get Stuck To Themselves?

An octopus might be one of the most intelligent invertebrates, but it doesn’t always know what, exactly, its arms are doing. How these animals manage to avoid tangling themselves up is a major feat.

May 15, 2014 — Katherine Harmon Courage

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