Octopuses have powerful jaws and venomous saliva, according to National Geographic. The only hard part of their bodies is a sharp, parrot-like beak that is on the underside, where the arms converge. In April 2016, an octopus at the National Aquarium of New Zealand squeezed out of its tank and made an eight-armed dash for a drainpipe that - luckily for him - led directly to the sea.Ī bulbous sack-like body, or mantle, is perched on top of an octopus' head. Their bodies are soft, enabling them to squeeze into small cracks and crevices, according to National Geographic. Most octopuses - those in the suborder Incirrata (or Incirrina) - have no internal skeletons or protective shells. Their suckers have receptors that enable an octopus to taste what it is touching. Octopuses have an excellent sense of touch, according to the World Animal Foundation.
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