Demersal fish flounder, sole, turbot, plaice, and halibut. The adult fish of many species have both eyes on one side of the head. When the fish hatches, one eye is located on each side of its head. But as the fish grows from the larval stage, one eye migrates to the other side of the body as a process of metamorphosis. The flatfish then changes its habits, and camouflages itself by lying on the bottom of the ocean floor with both eyes facing upwards. The side to which one eye migrates depends on the species; with some species both eyes are ultimately
Pinnoctopus cordiformis appear to be consistent differences between specimens identified as "P. cordiformis" and those identified as "O. maorum" which suggests that there is a second species but this species more closely resembles a species of the genus "Enteroctopus", with the description closely resembling "Enteroctopus zealandicus". The name "the name Pinnoctopus cordiformis" is regarded as unresolved, a "nomen dubium", by some authorities. Pinnoctopus cordiformis Pinnoctopus cordiformis is a species of octopus found around the coasts of New Zealand. "Pinnoctopus cordiformis" is identifiable by their orange-brown or purple-grey colouration; iridescent white spots are also found on the arms and web. No white spots