Squid, also known as squid, cuttlefish and cuttlefish, lives in shallow waters along the tropical and temperate coasts and often migrates to deeper waters in winter. There are pigment vesicles in its skin, which will change color and size with the change of mood. When it encounters a strong enemy, it will leave by inkjet as a way of escape, hence its name. It has amazing air flight ability and can jump out of the sea. Squid preys on crustaceans, molluscs and other small animals during migration, which is the main enemy.