Glass Squid is the collective name for any species of squid in the Cranchiidae family. There are currently 60 known species within this unique family. The various species of Glass Squid may be found in every ocean on earth. The majority of these creatures prefer a habitat region either near the surface or in mid-range depths. However, there are a few varieties of Giant Squid that reside at extreme depths. These may be found as deep as 1.6 mi (2 km) below the surface. As with most types of squid, individuals spend their youth near the surface, and slowly migrate to greater depths as they mature.