Ok, it may not be the mythological creature from the depths of the ocean but this cephalopod does conjure stories of what dwells leagues beneath the sea. An octopus aka a cephalopod has two eyes and four pairs of arms and is bilaterally symmetric. They have keen eyesight and incredible sense of touch. Interestingly,two-thirds of an octopus's neurons are found in the nerve cords of its arms, which have limited functional autonomy. The next time you look out at the vast undrinkable salty oceans take moment to day dream about the world of creatures below the surface.