Octopus is a benthic species that is characterized by direct development, a short life cycle, high motor intelligence and high visual acuity. Its coloration is variable according to the environment, which can pass rapidly from brown to green to yellow and white. His body has a warty aspect. The octopus has eight tentacles of the same length, each with two rows of   suction cups that are used to capture prey or to move to the bottom. At the base of the tentacles is the siphon which allows to propel itself quickly by reaction. In Mauritania, octopuses live on all types of bottoms with a preference for fine to coarse sand sediments. She digs shelters in these soft bottoms to protect herself from predators; the cephalopod itself digs its burrow that it leaves only to feed and reproduce.