Meet the Cephalopods! Cephalopod means “foot (pod) head (cephalo).” The cephalopods are mollusks (a group of ​ animals that includes snails, slugs, and shellfish). As their name implies, cephalopods are animals that have their feet (arms or tentacles) directly attached to their head. There are four general types of cephalopods: Octopus Squid Cuttlefish Nautilus [https://media.wired.c [https://www.montere ​ ​ om/photos/59267a7a ybayaquarium.org/-/m [https://www.national f3e2356fd8009636/ /images/animal-guide ​ [https://cdn.britannica. geographic.com/cont master/w_2400,c_lim ​ /octopus-and-kin/cha com/700x450/97/124 ent/dam/animals/thu it/SquidTA_BM5309.j mbered-nautilus-on-bl 97-004-6C90084D.jp mbs/rights-exempt/in pg] ue.jpg?bc=white&h=7 ​ g] vertebrates/c/commo ​ 87&mh=916&mw=122 n-octopus_thumb.JP 2&w=1046&usecusto G] mfunctions=1&cropx=1 ​ 53&cropy=0] ​ Octopuses have 8 Squids have 8 arms, Cuttlefish, like Nautiluses (or Nautili) ​ ​ ​ ​ ​ ​ arms. Aside from a and 2 longer Squids, have 8 arms, are very different beak, octopuses have tentacles (people and 2 longer from other no hard structures in commonly refer to tentacles. Cuttlefish cephalopods. They their bodies. As a any suckered arm as also have a stiff have an external result, octopuses can tentacles, but structure, due to a chambered spiral squeeze their way technically, tentacles broad internal shell shell. They can have into or out of all sorts are arms that have no called a cuttlebone (it up to 90 cirri (which of things, from clam suckers along their is used in pet stores are arms without shells to water length, except near for birds to sharpen suckers). Nautiluses bottles. their ends). Unlike their beaks). Whereas are not capable of the octopuses, squids squids have a thinner, instant skin color have a stiff structure torpedo-like shape, changes found in known as a pen, cuttlefish tend to be other cephalopods. which gives them broader and slower. their elongated Cuttlefish also have shape. unique W-shaped eyes. Watch this video to Watch this video to Watch this video to Watch this video to ​ ​ ​ ​ ​ ​ ​ ​ learn more! learn more! learn more! learn more! Resource by Randy Otaka .