The optic tract of cephalopods, such as the squid "Loligo", chiasmates without midline crossing. Squid of genus "Loligo" are widely consumed by humans. Squid of the genus "Loligo" have widely been used in first year biology laboratories. All three species of "Loligo" are extensively exploited by commercial fisheries. It was previously treated as a subspecies of "Loligo vulgaris", the European squid. "Loligo" squid gather near the surface of the water and males frenzy for females.