![]() ![]() Because larger suckers can generate larger adhesion forces, I hypothesized that the larger suckers toward the base of the arm would be preferred in tasks requiring the arm to employ greater forces. ![]() I investigated octopuses' use of suckers in similar tasks under controlled, reproducible laboratory conditions. Similar to squids engaged in prey capture, octopuses can project an arm from their body, attach a group of distal suckers, and pull an object toward themselves by shortening the arm. Octopuses use multiple suckers on a single surface for a power grasp that supports their locomotion or permits the animal to carry or move small objects. In natural settings octopuses use their arms and suckers in a variety of dexterous manipulation tasks, such as extracting prey from crevices and burrows, opening bivalve shells, and arranging middens in front of den entrances. ![]()
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