A Cephalopod is any member of the molluscan phylum. Member of the animalia kingdom, the mollusca phylum, Cephaloda class, Sepiida order, Sepiidae family, and Spedia genus and subgenus. Cephalopod meaning "Head-foot" Example of a Cephalopod is squid, octopus, chambered nautilus and cuttlefish. Cephalopods have the largest developed eyes and have great vision. They are able to produce an ink cloud and able to camouflage themselves.
Per wikipedia, The origin of the word cuttlefish can be found in the old English term cudele, which derived in the 15th century from the Norwegian koddi (cushion, testicle) and the Middle German kudel (pouch), a good description of the cephalopod's shape. Cuttlefish have the largest brain-to-body ratio.
Broadclub Cuttlefish
The Broadway Cuttlefish's scientific name is Sepia latimanus. The Broadway Cuttlefish is the second largest cuttlefish, growing up to 19.7inches long and 22.05lbs in weight. Cuttlefish have the ability of changing their color and texture.
The two pictures of the Broadway Cuttlefish are the exact some one but different stages of their coloration.
Video link:
http://videos.howstuffworks.com/wgbh-nova/2356-the-cuttlefishs-amazing-camouflage-video.htm