Taonius pavo, on of the glass squids is shown above. It is found in the North Atlantic, North Pacific and Antarctic Oceans in water deeper than 700 m.
Cranchia scabra, above, is one of the Glass squids and can be found in all oceans from the surface down to 1000 metres.
It has red pigment cells all over its body, and reaches about 15 cm long. When alarmed it can retract its head and shorter arms into the mantle cavity leaving its longer arms and eyes outside and forming itself into a tight ball. And as its body is covered by cartilaginous tubercles this will give it some protection against predators as it is difficult for them to bite it.
Onychoteuthis banksii also known as Loligo banksii, above, is found world wide. The long arms have a double row of hooks as well as the more usual suckers, giving this squid its common name.
Pterygioteuthis giardi, above, is a squid found in temperate and tropical oceans at depths of 200 - 700 metres. It is unusual in that some of its suckers have hooks that enable it to capture prey more easily.
Lycoteuthis diadema, also known as Lycoteuthis lorigera, below, is found in the Indian and Atlantic oceans at depths of 200 - 700 metres.
It has light-producing organs on its body, eyes and tentacles, and is considered quite a rare squid. In adults the fin is diamond or heart-shaped. It is thought that the light-producing organs below its eyes and on its tentacles are used in courtship.
What happy appellations these
Of birds and beasts in companies.
A shrewness of apes, a sloth of bears,
A soulk of foxes, a huske of hares.
A exultation 'tis of larks,
And possibly a grin of sharks,
But I declare a squirt of squid
I should not like to be amid
Though bachelors claim that a cloud of sepia
Makes a splendid hiding place in Leap Year.