This Squid Glows… To Make Itself Invisible

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When you live in the ocean, it can be hard to find ways to keep hidden from predators, or from your own prey. But these three animals have found clever ways to stay hidden, by using light to their advantage. One of them even /makes light/, specifically to hide better!

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Sources:
Lookdown fish:
https://link.springer.com/article/10.1007/s12601-016-0007-y
https://royalsocietypublishing.org/doi/10.1098/rsif.2014.1390
https://www.pnas.org/doi/10.1073/pnas.1222125110 ~
https://www.science.org/doi/10.1126/science.aad5284
https://pubs.aip.org/aip/adv/article/10/9/095133/991271/Hidden-triangular-grating-structures-in-biogenic ~
https://research-information.bris.ac.uk/ws/portalfiles/portal/341201469/sciadv.abq2770.pdf
https://www.nsf.gov/news/mmg/mmg_disp.jsp?med_id=81422

Glass squid:
https://www.mbari.org/animal/glass-squid/
https://oceanservice.noaa.gov/facts/light_travel.html
https://royalsocietypublishing.org/doi/10.1098/rsif.2016.0230
https://phys.org/news/2016-06-closer-reveals-deep-ocean-squid.html

Schools:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9214278/

Images

https://www.gettyimages.com/detail/video/choppy-water-wavy-sea-underwater-wave-hit-on-rocks-and-stock-footage/1398507734?adppopup=true
https://www.gettyimages.com/detail/video/sunset-light-underwater-slow-motion-stock-footage/1407820720?adppopup=true
https://www.gettyimages.com/detail/video/pack-of-sharks-in-underwater-marine-wildlife-of-fiji-stock-footage/1316023920?adppopup=true
https://www.gettyimages.com/detail/video/close-up-of-chameleon-sits-on-a-tree-branch-and-looks-stock-footage/1419979361?adppopup=true
https://www.gettyimages.com/detail/video/slow-motion-calm-open-sea-at-sunset-copy-space-empty-stock-footage/1395867642?adppopup=true
https://www.gettyimages.com/detail/video/salmons-stock-footage/1329962407?adppopup=true
https://commons.wikimedia.org/wiki/File:Fish4445_-_Flickr_-_NOAA_Photo_Library.jpg
https://commons.wikimedia.org/wiki/File:Wire-grid-polarizer.svg
https://www.gettyimages.com/detail/photo/selene-vomer-selene-royalty-free-image/954666750?phrase=Selene+vomer&adppopup=true
https://www.gettyimages.com/detail/video/flock-fish-underwater-sea-or-ocean-glass-fish-ambassidae-stock-footage/1454802987?adppopup=true
https://www.gettyimages.com/detail/video/closeup-of-a-school-of-anchovy-fish-stock-footage/923851346?adppopup=true
https://www.gettyimages.com/detail/video/numerous-shoal-of-fish-hardyhead-silverside-stands-in-stock-footage/1474504071?adppopup=true
https://oceanexplorer.noaa.gov/okeanos/explorations/ex1903/logs/july6/july6.html
https://commons.wikimedia.org/wiki/File:Galiteuthis_glacialis_(Ross_Sea,_Antarctica).jpg
https://oceanexplorer.noaa.gov/explorations/19gulfofalaska/logs/july31/media/video/cockatoo-squid.html
https://en.wikipedia.org/wiki/File:Teuthowenia_megalops_(Michael_Vecchione,_NOAA).jpg
https://en.m.wikipedia.org/wiki/File:Teuthowenia_megalops_%28Prosch,_1849%29.jpg
https://commons.wikimedia.org/wiki/File:Cranchiidae_sp.jpg