Octopus vulgaris is a prevalent Octopod in most major oceans, but despite its abundance is surprisingly elusive. The diurnal and nocturnal octopus has an average mantle length of twenty five centimeters with arms extending over one meter. They have been found in a wide range of depths from as little as five meters to as deep as two hundred. Although they are solitary organisms, O. vulgaris females will stay and brood their eggs, giving her own life for her unhatched young. Both sexes have a limited life span of twelve to fifteen months. They are both merciless predators of mollusks and crustaceans and prey to larger organisms such as seals and carnivorous fish. Unfortunately, human interest in O. vulgaris does not extend much past their commercial worth and delectability with some cocktail sauce.