The real name of squid is mullet, also known as squid, cuttlefish or cuttlefish. It is a mollusk, belonging to cephalopods. When the squid meets a strong enemy, it will use "inkjet" as an escape way and wait for an opportunity to leave, so it has the names of "squid" and "cuttlefish". There are pigment vesicles in the skin, which will change color and size with the change of "mood" Squid can jump out of the sea and have amazing air flight ability. Like squid and octopus, they all belong to marine mollusks, but not to fish.