Squid is a group of large cephalopod animals or types of mollusks living in the ocean. [1] The name '' Cephalopoda '' in Greek means "head of the head", this is because of the legs separated into a number of hands that encircle the head. [2] Like all cephalopods, the squid are separated by having different heads. Large axons of this squid have a diameter of 1 mm. Cuttlefish is widely used as
Squid is one of the animals in the invertebrate class (not in the backbone). [3]
One type of deep-sea squid, '' Heteroteuthis '', is that which has the ability to emit light. [4] The light-emitting organ lies at the tip of a long, protruding long jutting forward. [4] This is due to the lumination events that occur in this type of squid. [4] Heteroteuthis squirt large amounts of liquid glowing when he felt disturbed, the process is the same as in the case of ordinary squid squirting ink.
