European squid propulsion. The posterior border is slightly concave. The head is relatively small and has large eyes which are covered with a transparent membrane. Like almost all squid, this species has ten limbs surrounding the mouth and beak: eight are relatively short arms, and two, which form the tentacles, are long, as they are used to catch prey. The fourth left arm of males is a hectocotylus. The European squid can grow up to 30–40 cm in the mantle length, but more usually they are 15–25 cm long. The males are generally bigger than the females and exhibit more rapid rates
Squid as food usually made with onion, tomato, squid ink, among others. In Spain and Italy, squid or cuttlefish ink is eaten in dishes such as paella, risotto, soups and pasta. In Italy, Greece, Spain, Portugal and Croatia, squid rings and arms are coated in batter and fried in oil. Other recipes from these regions feature squid (or octopus) simmered slowly, with vegetables such as squash or tomato. When frying, the squid flesh is kept tender by short cooking time. When simmering, the flesh is most tender when cooking is prolonged with reduced temperature. In Portugal, "lulas" are commonly eaten grilled whole, in