Octopuses have a secret sense to keep 8 arms out of trouble

Octopuses have a secret sense to keep 8 arms out of trouble
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By Richard Sima
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Though it is well-known for its many arms, the octopus does not seem to know where those eight appendages are most of the time.
“In the octopus, you have no bones and no joints, and every point in its arm can go to every direction that you can think about,” said Nir Nesher, a senior lecturer in marine sciences at the Ruppin Academic Centre in Israel. “So even one arm, it’s something like endless degrees of freedom.”

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