Squid, also known as soft fish and squid, is an eye-opening suborder of Cephalopoda Sheath, a suborder of mollusca. The body is cone-shaped, pale with light brown spots, with a big head, touching feet 10 in front, and the fleshy fins at the tail end are triangular, often swimming in groups in the ocean about 20 meters deep.

Squid, although it is customary to call them fish, is actually not a fish, but a mollusk living in the ocean, with a slender, long cone-shaped body and a sucker at the front end. Squid has two gills as respiratory organs; The body is divided into head, short neck and trunk. The body is slender and has a long cone shape, two of which are longer. Taxonomically, squid belongs to mollusca-Cephalopoda-Dipranchia-Decapoda. There are a pair of developed eyes and wrist feet around the mouth on both sides of the head.