: any of a class (Cephalopoda) of marine mollusks including the squids, cuttlefishes, and octopuses that move by expelling water from a tubular siphon under the head and that have a group of muscular usually sucker-bearing arms around the front of the head, highly developed eyes, and usually a sac containing ink which ...
Which are characteristics of cephalopods?
Characteristics: Cephalopods are mollusks, where the foot has developed into a set of arms or tentacles. Another common feature is their ability to squirt ink when threatened. Their body is symmetrical, i.e. the left and right side of the body is identical.
What exactly is a cephalopod?
Cephalopods include the octopus, squid, cuttlefish, and nautilus, and the extinct ammonites, belemnites, and other nautiloids. The definition of a cephalopod is a marine creature with a large head, large eyes and tentacles. An octopus is an example of a cephalopod. noun.