Squid Squid Squid are cephalopods in the order Teuthida with elongated bodies, large eyes, eight arms and two tentacles. Like all other cephalopods, squid have a distinct head, bilateral symmetry, and a mantle. They are mainly soft-bodied, like octopuses, but have a small internal skeleton in the form of a rod-like gladius or pen, made of chitin. Squid can change colour for camouflage and signalling. Some species are bioluminescent, using their light for counter-illumination camouflage. Squid are members of the class Cephalopoda, subclass Coleoidea. The squid orders Myopsida and Oegopsida are in the superorder Decapodiformes (from the Greek for "ten-legged"). Two
Neon flying squid fourth arm. Another distinguishing characteristic of "O. bartramii" is the presence of 4 to 7 toothed suckers on the tentacular club, near the nearest carpal suckers of the carpal locking apparatus. This is especially useful in differentiating it from the orangeback flying squid ("Sthenoteuthis pteropus"). Photophores are present but are small, irregular, and restricted to the ventral side of the mantle, head, and tentacles. Visceral photophores are absent. Like other ommastrephids and onychoteuthids known as 'flying squid', neon flying squid are so named for their ability to shoot out of the water, much like flying fishes. They sometimes unintentionally land