Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Rugose Hooked Squid (Moroteuthis robsoni) is a species of squid in the family Onychoteuthidae. It occurs in the Antarctic Ocean, at an estimated depth of 250 550 meters. The mantle of this species grows to a length of 75 cm. The species has been suggested as a junior synonym of the Tropical Clubhook Squid (Onykia carriboea), due to similarities between the species.