Cephalopod

A class of mollusk that includes the octopus, squid and cuttlefish. It is the most biologically advanced of the mollusks. All cephalopods share 2 common characteristics-- tentacles attached to the head, and ink sacs, which they use to evade their predators. Cephalopods have never been broadly accepted in the United States. They are quite popular with many southern Europeans, Japanese and Chinese.