Jewel Squid – Submarine Ride 2540 Feet, originally uploaded by hankplank.

This photo was taken at a depth of 2540 ft off the coast of Roatan. The Jewel Squid (Histioteuthis sp.) are notable for having one eye that is significantly larger than the other. For this reason they are also known as the Cock-eye Squid. When feeding at night, Jewel Squids orient themselves so that the larger eye is pointing upward, presumably to spot potential prey as it is silhouetted against the surface. Histioteuthis are moderate sized squid, with a max mantel length of about 33cm.