Why do octopuses and squids have eight arms?

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One of the most famous things about octopuses and squids is that they have eight arms! Octopuses and squids belong so a special category of sea-creatures with a funny-sounding name: Cephalopods. This cool word means “head-footed.” – Pretty smart, since the arms of cephalopods grow right out of the base of their heads!

The reason octopuses and squids have eight arms is that it allows them to do all kinds of helpful things! For example, octopuses are able to detach one of their arms from their body if the arm is caught by a predator! The arm continues to move even after it’s disconnected from the octopus’s body, which confuses the predator while the octopus make his or her escape! (The missing arm then grows back over time.)

The eight arms also help octopuses and squids to move around at the bottom of the ocean floor. Some recent science has also shown that octopuses may sometimes use two of their limbs more like legs while the other six of them are more like arms. This can help the octopus to continue walking while using its other six limbs to camouflage itself into another shape! (Sounds like having eight arms can be pretty handy!)

by   (whyzz writer)
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