The loliginidae family in the Adriatic contains 4 species of squids. The kind that thousands of boats per day catch is (loligo vulgaris), ordinary european squid, calamar.

Common squid can grow from 30 to 40 cm in length, but its average length is about 15 to 25 cm. Males are mostly larger than females and grow faster.

It has a relatively large head and on its head there are 8 legs that have two rows of pins and two catch legs. Inside the middle of the head is a powerful beak like a peacock bead, with which it drops and crushes its catch. The body is spindle and oblong with two side fins.

Like all molluscs and some fish, ordinary calfskin is covered with numerous chromatoffs that have the task of rapidly changing body color. In addition to defensive uses, where the color changes for the purpose of camouflage, the chromatofora cells also serve as a primitive form of communication between the molluscs, which can be especially noticed during mating. The basic colors that are produced are brownish, red, while in the males in the front of the cloak are visible black dots or dashes.

It is spread all over the Adriatic to a depth of 400 m and falls into all layers of water, most commonly between 40 and 150 m in depth.

Shortfin squid is not a male version of squid! Shortfin squid is smaller than squid, has more pink color on itself and has less meat than squid. Likewise, calves have a perennial on the very bottom of the body, while the squirrels stretch almost the entire length of the body. In addition, squids have shorter  and smaller heads.