Red Octopus. 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.
Octopus - Though these slimy, slinky eight-armed mollusks are a bit creepy – they have no skeleton so can morph their body to squeeze through tight spaces – they can be quite endearing. For one thing, they're probably the most intelligent of all invertebrates (they're very good at getting out of tanks when kept as pets) and their staring eyes have a soulful look about them. Credit: Marc Tule/Scripps
A baby red octopus is small enough to sleep on your fingernail. Which explains how one managed to sneak into the Monterey Bay Aquarium on a rock or sponge and stow away there for nearly a year, secretly snacking on the aquarium’s crabs, before being found