Common Octopus (Lat. Octopus vulgaris). It is found worldwide in tropical and semitropical waters from near shore shallows to as deep as 200 m. Lives for 12 to 18 months. The Common Octopus reaches 60-100 cm in length. The arms are lined with suckers. The skin is smooth and has special pigment cells that make it possible for the octopus to…