The juvenile was caught and filmed live by Dr Steve O'Shea in 2001 unfortunately all died before they could be grown in captivity. There is also a tremendous body of scientific literature available for this species. Quite a lot – check out these popular articles: What we know about Giant Squid ( Architeuthis dux) (Figs 6–9): With this basic introduction to octopus and squid anatomy aside, we can move on to the real purpose of this fact sheet. You will find additional information on squid and octopus in our Guide to Frequently Used Characters, Character States and Measures. It is the squids' hooks and rings that have enthralled the public most. The only universal distinction between a squid and an octopus is that the suckers of squid are armed with hooks or sucker rings (or a combination of the two), while octopus have simple suckers without secondary armature (Fig. Some octopuses (9 species in New Zealand waters) possess two well-developed fins these 9 species also have a well-developed pen (like a cuttlebone) in their mantle, and are considered rather primitive, commonly referred to as 'Dumbo Octopuses'. Some squid naturally lose the tentacles in post-larval stages, so that the adult possesses 8 arms only some squid can have more than 2 fins. 8 arms endowed with one or two rows of suckers (but never hooks or sucker rings) they have no tentacles (Fig.8 arms and two tentacles, each endowed with hooks and/or suckers and sucker rings (Figs 1-4).Introduction to squid anatomy: Basic squid and octopus facts For the sake of this article we will focus on the absolute basics of cephalopod anatomy, and some frequently cited measures, particularly Mantle Length (ML), Standard Length (SL), and Total length (TL).ġ. We already have online an introduction to octopus and squid anatomy in our article, Deep-Sea Cephalopods: An Introduction and Overview, so will not unnecessarily duplicate that information. 1), where we detail the differences between squid and octopus second, an introduction to size and how it has been measured (and misreported) and third, an introduction to the two species that you will be hearing a lot about: Colossal Squid ( Mesonychoteuthis hamiltoni) and Giant Squid ( Architeuthis dux). First, a simplified account of squid morphology (Fig. To ensure accurate reporting of these squid species, the following brief notes have been prepared. You can communicate with them both in our Cephalopod Science forums. ![]() Steve and Kat are members of the TONMO staff. An analysis of the size of the largest cephalopods: Architeuthis and MesonychoteuthisĪuthored by Dr.
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