Researcher Binyamin Hochner, one of the researchers who studied the octopuses, explained that these marine animals have unique strategies of locomotion that are not found in any other species.
Because the octopus has a soft mollusk body, their locomotory system evolved into a weird morphology which enables the octopus to control its body while moving, without having a rigid type of skeleton.
The octopus has 8 soft and flexible arms that lack a rigid skeleton. Its arms act as if they have multiple joints, enabling them to move very smoothly.
Hochner explained that the octopus’s ability to move in all direction is due to the fact that it evolved from having rigid and immobile clams.
The octopus used to have a shell that protected its body before it evolved to the creature that is today. By losing that protective shell, the octopus is able to move its whole body very easily.
However, by losing the protective shell, the octopuses became more vulnerable; this vulnerability made the octopus evolve, which gave it the ability to move faster than any other species of mollusks.
Other mollusks like snails and clams move by using a single foot, which is their body. They move in a slow but powerful way.
The octopus evolved into having eight arms for moving and catching prey.
In order to understand how the octopus manages to move using its soft arms, the researchers filmed the animal and studied the video to see exactly the mechanism the octopus uses.
The scientists analyzed the octopus’s every move, frame by frame.
They discovered that the octopus’s movement does not depend on the body orientation, nor their crawling has any rhythm that could help them predict the next move.
The researchers found that instead of pushing and pulling itself in one direction, the octopus uses some of its arms in the direction it wants to go.
The new findings on how the octopus can coordinate its arms for moving were published in Journal Current Biology.
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