Octopus has 'elbow'
The octopus is folding its 'arm' to bring food into its mouth
Perhaps you have never heard that octopuses are able to harden taps to form 'elbows' to bring food into their mouths? But according to research by Italian and Israeli scientists, the 8 'arms' of octopus have flexible movement ability in almost every direction, allowing them to arbitrarily bend or twist. When eating, they use flexible 'hands' to create temporary joints that function similarly to human hand joints.
Observing the 'hand' activity of the octopus, the team found that each 'arm' performed two sequential contractions and when the 'arm' touched the 'shoulder blades' it would form 'elbow'. . This disguised talented animal uses this technique to form an 'arm' with 3 joints, like the person's shoulders, elbows and wrists. This is a simple and optimal mechanism to adjust the length of 'arms' according to the position of the food they want to grab. These taps controlled by joints like this are the best way for the octopus to take steady steps.
T.Tr
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