Cock-eyed Squid

The Cock-eyed Squid is a genus of squid, as well as the only member of the Histioteuthidae family.

In 2017, researchers at Duke University established that Histioteuthis uses its larger eye to see ambient sunlight, and its smaller eye to detect bioluminescence from prey animals.

Species
H. bonnellii species-group H. reversa species-group H. celetaria subspecies-group H. corona subspecies-group H. meleagroteuthis species-group
 * Histioteuthis bonnellii, umbrella squid
 * Histioteuthis machrohista
 * Histioteuthis altaninae
 * Histioteuthis atlantica
 * Histioteuthis reversa, reverse jewel squid
 * Histioteuthis celetaria celetaria
 * Histioteuthis celetaria pacifica
 * Histioteuthis corona berryi
 * Histioteuthis corona cerasina
 * Histioteuthis corona corona
 * Histioteuthis corona inermis
 * [[H. miranda species-group
 * Histioteuthis miranda
 * Histioteuthis oceani
 * Histioteuthis heteropsis, strawberry squid
 * Histioteuthis meleagroteuthis

The genus contains bioluminescent species.