Editing Giant squid (section)

== Species ==
[[File:Architeuthis sanctipauli in National Museum of Natural Science, Taichung, Taiwan.JPG|thumb|upright|''Architeuthis sanctipauli'' specimen exhibited in the [[National Museum of Natural Science]], Taichung, Taiwan.]]
The taxonomy of the giant squid, as with many cephalopod genera, has long been debated. [[Lumpers and splitters]] may propose as many as seventeen species or as few as one. The broadest list is:{{citation needed|date=December 2021}}
* ''Architeuthis dux'', Atlantic giant squid
* ''Architeuthis (Loligo) hartingii''
* ''Architeuthis japonica''
* ''Architeuthis kirkii''
* ''Architeuthis (Megateuthis) martensii'', North Pacific giant squid
* ''Architeuthis physeteris''
* ''Architeuthis sanctipauli'', southern giant squid
* ''Architeuthis (Steenstrupia) stockii''
* ''Architeuthis (Loligo) bouyeri''
* ''Architeuthis clarkei''
* ''Architeuthis (Plectoteuthis) grandis''
* ''Architeuthis (Megaloteuthis) harveyi''
* ''Architeuthis longimanus''
* ''Architeuthis monachus?'' 
* ''Architeuthis nawaji''
* ''Architeuthis princeps''
* ''Architeuthis (Dubioteuthis) physeteris''
* ''Architeuthis titan''
* ''Architeuthis verrilli''
It is unclear if these are distinct species, as no genetic or physical basis for distinguishing between them has yet been proposed.

In the 1984 ''FAO Species Catalogue of the Cephalopods of the World'', Roper, ''et al.'' wrote:<ref>{{cite book |author1=Roper, C.F.E. |author2=Sweeney, M.J. |author3=Nauen, C.E. |year=1984 |url=http://www.fao.org/docrep/014/i1920e/i1920e00.htm |title=Cephalopods of the World |publisher=Food and Agriculture Organization |place=Rome, Italy |access-date=9 September 2013 |archive-date=29 January 2019 |archive-url=https://web.archive.org/web/20190129054613/http://www.fao.org/docrep/014/i1920e/i1920e00.htm |url-status=live }}</ref>

{{blockquote|Many species have been named in the sole genus of the family Architeuthidae, but they are so inadequately described and poorly understood that the systematics of the group is thoroughly confused.}}

In ''Cephalopods: A World Guide'' (2000), [[Mark Norman (marine biologist)|Mark Norman]] writes:<ref name=Norman>{{cite book |author=Norman, M.D. |author-link=Mark Norman (marine biologist) |year=2000 |title=Cephalopods: A world guide |publisher=ConchBooks}}</ref>

{{blockquote|The number of species of giant squid is not known, although the general consensus amongst researchers is that there are at least three species, one in the Atlantic Ocean (''Architeuthis dux''), one in the Southern Ocean (''A. sanctipauli'') and at least one in the northern Pacific Ocean (''A. martensi'').}}

In March 2013, researchers at the [[University of Copenhagen]] suggested that, based on [[DNA]] research, there is only one species:<ref name=genetics/><ref name=Gilbert>{{cite web |url=http://news.ku.dk/all_news/2013/2013.3/squid_dna_tom_inger/ |title=Monster from the deep hits the surface |last1=Gilbert |first1=Tom |last2=Winkelmann |first2=Inger |date=20 March 2013 |publisher=University of Copenhagen |access-date=20 March 2013 |archive-date=24 March 2013 |archive-url=https://web.archive.org/web/20130324052856/http://news.ku.dk/all_news/2013/2013.3/squid_dna_tom_inger |url-status=live }}</ref>

{{blockquote|...&nbsp;researchers at the University of Copenhagen leading an international team, have discovered that no matter where in the world they are found, the fabled animals are so closely related at the genetic level that they represent a single, global population, and thus despite previous statements to the contrary, a single species worldwide.}}