Can octopus regenerate tentacles1/22/2024 ![]() After the animals were euthanized, their arms were removed and kept in chilled seawater for up to an hour until they were ready for experimentation. George's University of London and the Anton Dohrn Zoological Station in Naples, Italy, examined 10 adult common octopuses ( Octopus vulgaris) that had been collected and used for other studies. The research is in the special September 2013 issue of the Journal of Experimental Marine Biology and Ecology called "Cephalopod Biology" (we'll check out the other fascinating studies in days and weeks ahead). This, researchers suspect, lightens the cognitive coordination demands and allows octopuses to let their arms do some of the "thinking"-or at least the coordination, problem-solving and reaction-on their own.Īnd these arms can continue reacting to stimuli even after they are no longer connected to the main brain in fact, they remain responsive even after the octopus has been euthanized and the arms severed. Some two thirds of its neurons reside not in its central brain but out in its flexible, stretchable arms. The octopus's nervous system is a fascinating one. And new research shows just how deep their independence runs-even when they are detached. But these arms are not entirely under the control of the octopus's brain. ![]() The eight wily arms of an octopus can help the animal catch dinner, open a jar and even complete a convincing disguise. ![]()
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