Primary Literature:
Alabia ID, Saitoh S-I, Mugo R, Igarashi H, Ishikawa Y, Usui N, et al. (2015) Identifying Pelagic Habitat Hotspots of Neon Flying Squid in the Temperate Waters of the Central North Pacific. https://doi.org/10.1371/journal.pone.0142885
Animal Physiology. Fourth Edition. By Richard W. Hill, Gordon A. Wyse, and Margaret Anderson. Sunderland (Massachusetts): Sinauer Associates.
Carreño Castilla, A., Hernández-Urcera, J., Gouraguine, A. et al. Predation behaviour of the European squid Loligo vulgaris. J Ethol 38, 311–322 (2020). https://doi-org.jpllnet.sfsu.edu/10.1007/s10164-020-00652-4
Chung, Wen-Sung & Kurniawan, Nyoman & Marshall, N.. (2020). Toward an MRI-Based Mesoscale Connectome of the Squid Brain. https://www.researchgate.net/publication/338350754_Toward_an_MRI-Based_Mesoscale_Connectome_of_the_Squid_Brain
Chung, W.-S., & Marshall, N. J. (2017, February 8). Complex Visual Adaptations in Squid for Specific Tasks in Different Environments. Frontiers. https://www.frontiersin.org/articles/10.3389/fphys.2017.00105/full
Birk, M., Agnieszka K. Dymowska, Brad A. Seibel; Do squid breathe through their skin?. J Exp Biol 1 October 2018; 221 (19): jeb185553. doi: https://journals.biologists.com/jeb/article/221/19/jeb185553/33833/Do-squid-breathe-through-their-skin
Guerra, Á. (2019). Functional Anatomy: Macroscopic Anatomy and Post-mortem Examination. Handbook of Pathogens and Diseases in Cephalopods, 11–38. https://link.springer.com/chapter/10.1007%2F978-3-030-11330-8_3
Lin, J K., and D C. Hurng. "Thermal Conversion of trimethylamine-N-oxide to Trimethylamine and Dimethylamine in Squids." Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association, vol. 23. https://www.sciencedirect.com/science/article/abs/pii/0278691585901826?via%3Dihub
Maddock, L. and Young, J.Z. (1987), Quantitative differences among the brains of cephalopods. Journal of Zoology, 212: 739-767. https://doi.org/10.1111/j.1469-7998.1987.tb05967.x
Nilsson, Dan & Warrant, Eric & Johnsen, Sönke & Hanlon, Roger & Shashar, Nadav. (2012). A Unique Advantage for Giant Eyes in Giant Squid. Current biology : CB. 22. 683-8. https://www.researchgate.net/publication/221713604_A_Unique_Advantage_for_Giant_Eyes_in_Giant_Squid
R. H. Douglas, R. Williamson, H.-J. Wagner; The pupillary response of cephalopods. J Exp Biol 15 January 2005; 208 (2): 261–265. doi: https://journals.biologists.com/jeb/article/208/2/261/15800/The-pupillary-response-of-cephalopods
Rocha, Francisco & Guerra, Angel & González, Ángel. (2001). A review of reproductive strategies in cephalopods. Biological Reviews. 76. 291 - 304. https://www.researchgate.net/publication/227835463_A_review_of_reproductive_strategies_in_cephalopods
Shigeno, S., Andrews, P. L. R., Ponte, G., & Fiorito, G. (2018, June 28). Cephalopod Brains: An Overview of Current Knowledge to Facilitate Comparison With Vertebrates. Frontiers. https://www.frontiersin.org/articles/10.3389/fphys.2018.00952/full
Solé, M., Marc Lenoir, José-Manuel Fortuño, Mike van der Schaar, Michel André; A critical period of susceptibility to sound in the sensory cells of cephalopod hatchlings.. Biol Open 15 October 2018; 7 (10): bio033860. Doi: https://journals.biologists.com/bio/article/7/10/bio033860/1406/A-critical-period-of-susceptibility-to-sound-in
Solé M, Lenoir M, Durfort M, López-Bejar M, Lombarte A, André M (2013) Ultrastructural Damage of Loligo vulgaris and Illex coindetii statocysts after Low Frequency Sound Exposure. https://doi.org/10.1371/journal.pone.0078825
Sugimoto, C., & Ikeda, Y. (2013). Comparison of the Ontogeny of Hunting Behavior in Pharaoh Cuttlefish (Sepia pharaonis) and Oval Squid (Sepioteuthis lessoniana). Biological Bulletin, 225(1), 50-59. Retrieved May 24, 2021, from http://www.jstor.org/stable/23595256
Villanueva, R., Perricone, V., & Fiorito, G. (2017, August 3). Cephalopods as Predators: A Short Journey among Behavioral Flexibilities, Adaptions, and Feeding Habits. Frontiers. https://www.frontiersin.org/articles/10.3389/fphys.2017.00598/full
Williams, T.L., Senft, S.L., Yeo, J. et al. Dynamic pigmentary and structural coloration within cephalopod chromatophore organs. Nat Commun 10, 1004 (2019). https://doi.org/10.1038/s41467-019-08891-x
Young, Jock & Olson, Robert & Rodhouse, P.. (2013). The role of squids in pelagic ecosystems: An overview. Deep Sea Research Part II Topical Studies in Oceanography. https://www.researchgate.net/publication/236878111_The_role_of_squids_in_pelagic_ecosystems_An_overview
Young, J.Z. (1963), The Number and Sizes of Nerve Cells in Octopus Proceedings of the Zoological Society of London, 140: 229-254. https://doi.org/10.1111/j.1469-7998.1963.tb01862.x
Gray Literature:
Blaszczak-Boxe, A. (2016, February 26). Squid filmed using their ink clouds as smokescreen to catch prey. New Scientist. https://www.newscientist.com/article/2078933-squid-filmed-using-their-ink-clouds-as-smokescreen-to-catch-prey/
Fulton-Bennett, K., & Lance, K. (2020, February 24). 16 things you probably didn't know about cephalopod sex. MBARI. https://www.mbari.org/cephalopod-sex/
Fulton-Bennett, K. (2017, February 24). First observations of an egg-brooding squid. MBARI. https://www.mbari.org/first-observation-of-an-egg-brooding-squid/
Investigation. Learn About Squids! (n.d.). http://tolweb.org/treehouses/?treehouse_id=4225
Masters, M. (2020, November 19). Diet of a Squid. Pets on Mom.com. https://animals.mom.com/diet-squid-1957.html
Nature Publishing Group. (n.d.). Nature News. https://www.nature.com/scitable/topicpage/cephalopod-camouflage-cells-and-organs-of-the-144048968/
The organs of a colossal squid. Museum of New Zealand Te Papa Tongarewa, Wellington, NZ. (2019, March 4). https://www.tepapa.govt.nz/discover-collections/read-watch-play/science/colossal-squid/anatomy-colossal-squid/organs-colossal
UCSB Science Line. (n.d.). http://scienceline.ucsb.edu/getkey.php?key=3357#:~:text=Squids%20do%20not%20have%20lungs,of%20like%20a%20tube%20sock.
Squid Animal Facts: Teuthida. AZ Animals. (2021, February 28). https://a-z-animals.com/animals/squid/
Squid Facts and Information. (n.d.). https://www.squid-world.com/
YouTube. (2015). You're Not Hallucinating. That's Just Squid Skin. | Deep Look. YouTube. https://www.youtube.com/watch?v=0wtLrlIKvJE
YouTube. (2011). Rage-inducing chemical makes squid violent. YouTube. https://www.youtube.com/watch?v=TeeIxKf8_do&t=33s
YouTube. (2009). Squids Breeding in Kelp Seas | Blue Planet | Bbc Earth. YouTube. https://www.youtube.com/watch?v=n45x2Ek-jAk
Zielinski, S. (2011, March 10). Fourteen Fun Facts About Squid, Octopuses and Other Cephalopods. Smithsonian.com. https://www.smithsonianmag.com/science-nature/fourteen-fun-facts-about-squid-octopuses-and-other-cephalopods-45444510/