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Thysanoteuthis rhombus, also known as the diamond squid, diamondback squid, or rhomboid squid, is a large species of squid from the family Thysanoteuthidae which is found worldwide, throughout tropical and subtropical waters. T. rhombus is given its name for the appearance of the fins that run the length of the mantle. They are a fast growing ...
Colours of European common squid. Alloteuthis subulata has a long, narrow mantle with a long tail which is pointed in adult females and even longer and rather spike-like in adult males. The fins are rhomboid-shaped, with pointed sides, and their rear ends are concave and extend along the tail. The short tentacles are delicate, with small ...
An extreme development of the cephalopod fin is seen in the bigfin squid of the family Magnapinnidae. [2] Fins project from the mantle and are often positioned dorsally. In most cephalopods, the fins are restricted to the posterior end of the mantle, but in cuttlefish and some squid they span the mantle's entire length.
The European squid or common squid (Loligo vulgaris) is a large squid belonging to the family Loliginidae. It occurs abundantly in coastal waters from the North Sea to at least the west coast of Africa. This species lives from sea level to depths of 500 m (1,600 ft). Its mantle is up to 40 cm (16 in) long. The species is extensively exploited ...
In a 1990 study of dermal structures in squid, Clyde F. E. Roper and C. C. Lu wrote that they were "unable to suggest a function" for the tubercles of this species, but that due to their small size and spacing they were unlikely to be involved in buoyancy or locomotion. [1]
The squid lives in the twilight zone during the day, hiding from predators in the darkness. At night, like many other animals that live in the twilight zone, it migrates to more shallow waters in ...
Slosarczykovia circumantarctica is a relatively large species of squid attaining a mantle length of 170 mm, [3] the mantle having a long and slender form with rhomboid shaped fins placed posteriorly. [4] The suckers on the arms are very variable some completely lacking in teeth, others with few teeth and yet others with many teeth.
A video of the same squid appears in a Japanese made-for-television film. [11] The image was published in the 1993 book European Seashells by Guido T. Poppe and Goto Yoshihiro, where it was identified as Architeuthis dux , the giant squid , and said to have been taken in the North Atlantic .