This photograph shows a deep-sea octopus in the genus Stauroteuthis that has turned itself inside out, perhaps as a defensive maneuver. What you are seeing is the underside of six of the octopus' eight tentacles, as well as the underside of the fleshy web that stretches between the tentacles. In between the octopus' suckers, you can see small spines called "cirrae," which are believed to help the octopus grab and hold prey. Although many octopus live on the seafloor, Stauroteuthis usually swim u Ocean Sea, Deepsea, Octopuses Sucker, Da Sea, Blue Sea, Stauroteuthi Inside, Deep Sea Octopuses, Natural Science, Life Deep
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Octopuses have 2 eyes and 4 pairs of arms and are bilaterally symmetric. An octopus has a hard beak, with its mouth at the center point of the arms. Octopus lack an internal or external skeleton allowing them to squeeze through tight places. Octopuses are among the most intelligent and behaviorally flexible of all invertebrates.