In this video from National Geographic, witness how a 600-pound octopus is able to squeeze through a tube the size of a quarter.
Because octopuses have no bones, they are able to fit in extremely small spaces, like in this 'plexiglass wonderland' created by Nat Geo.
And because of no air bladders or gas pockets, these magnificent creatures can live at extreme depths of the oceans with such intense pressures that, according to Nat Geo, would cause a human to implode almost instantly.
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