Why Octopuses Don't Tie Themselves in Knots

[Still Waters]

Octopuses look like a tangle of squishy arms, and yet they never tie their limbs in a knot, finds a new study that determined octopus skin repels itself.

The discovery, published in the latest issue of Current Biology, is helping researchers to design soft robots, such as for surgical use, that can reshape their bodies without becoming a jumbled mess.

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