Cuttlefish and squid are the same animal, and cuttlefish is another name for squid. Squid is different from cuttlefish (or squid) and is another animal. \x0d\ Squid and squid are similar in shape, belonging to mollusca, Cephalopoda and Decapoda. They also have ink sacs, and leaves in danger can spit out black "ink", but they are different families. Squid belongs to Decapoda sepiidae, and squid belongs to Decapoda sepiidae. \x0d\ Squid is a slightly flat oval with a bone plate inside, which is a degenerated shell; There are five pairs of wrist feet, four of which are shorter, and each wrist foot has four rows of suction cups; The fifth pair of brachiopods is longer, only with sucker at the end. Squid has narrow fleshy fins on both sides of the body, which are located on both sides of the body and have no fleshy fins at the end. \x0d\ Squid has a slender body with a long cone shape, and there is no bone plate inside, only a slender and transparent spicule; Five pairs of wrist feet, four of which have two rows of suction cups; The fifth pair of longer wrist feet only has suction cups at the front end. Squid only has a pair of triangular meat fins at the end of its body, and there are no meat fins on both sides of its body.