What is Squid?
{{Automatic taxobox | taxon = Teuthida | fossil_range = (at least) {{fossil range|Late Cretaceous|Recent|ref=<ref name=Tanabe2006>{{Cite journal | last1 = Tanabe | first1 = K. | last2 = Hikida | first2 = Y. | last3 = Iba | first3 = Y. | year = 2006 | title = Two Coleoid Jaws from the Upper Cretaceous of Hokkaido, Japan | url = https://archive.org/details/sim_journal-of-paleontology_2006-01_80_1/page/138 | journal = Journal of Paleontology | volume = 80 | issue = 1 | pages = 138–145 | doi = 10.1666/0022-3360(2006)080[0138:TCJFTU]2.0.CO;2 | s2cid = 130583140 }}</ref>}} | image =Loligo vulgaris.jpg | image_caption = [[European squid]] | image_alt=Photo of squid with 8 short arms and two longer tentacles | authority = [[Adolf Naef|A. Naef]], 1916 | subdivision_ranks = [[Suborders]] | subdivision = [[Plesioteuthididae]] <small>(''[[incertae sedis]]'')</small><br> [[Myopsida]]<br> [[Oegopsida]] }} [[ File:Caribbean reef squid.jpg|thumb|right|A [[Caribbean reef squid]] ]] '''Squid''' are [[cephalopod]]s of the [[Order (biology)|order]] '''Teuthida'''. They are the sister group to the [[octopod]]s. Squid are carnivores, but they are also hunted as prey. The largest squid, the [[giant squid]] and [[colossal squid]], are eaten by [[sperm whale]]s and [[sleeper shark]]s.<ref name=O'Shea> O'Shea S. 2003. Giant squid and colossal squid fact sheet. The Octopus News Magazine Online. [https://www.tonmo.com/pages/giantsquidfactsheet/]</ref> There are about 300 [[species]] of squid. == Characteristics == Squid, like [[cuttlefish]], have eight [[arm]]s arranged in pairs, and two longer [[tentacles]] with suckers. All squid have a mouth with a [[radula]], and jet propulsion with the [[Siphon (mollusc)|siphon]] from the [[Mantle (mollusc)|mantle]]. The radulla is a scraping [[Organ (anatomy)|organ]] in the mouth that scrapes nutrients from food sources. Tentacles are used for locomotive power and capturing food sources. All squids are [[carnivore]]s; they eat other animals, not [[plant]]s. Like other cephalopoda,