This Old Sailors’ Mystery Could Help Save Swimmers

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For thousands of years, sailors have been telling stories of a mysterious phenomenon called dead water. Even after scientists figured out why it happens, it still affects swimmers today.

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Sources:
https://www.newscientist.com/article/dn15003-mysterious-dead-water-effect-caught-on-film/
http://www.mathaware.org/mam/01/essay.html
https://arxiv.org/pdf/1103.0903.pdf
https://www.researchgate.net/publication/23663380_Swimming_obstructed_by_dead-water

Image Sources:
https://en.wikipedia.org/wiki/Fram#/media/File:Amundsen-Fram.jpg
https://www.istockphoto.com/photo/jokulsarlon-glacier-lagoon-gm1133790157-301044116
https://en.wikipedia.org/wiki/Vagn_Walfrid_Ekman#/media/File:Ekman_Vagn.jpg
https://www.istockphoto.com/vector/waves-background-gm860324562-142190081
https://www.istockphoto.com/vector/set-of-different-ships-and-boats-gm1149834333-311045186
https://www.istockphoto.com/photo/young-african-american-woman-driving-the-car-gm1126079230-296282449
https://www.istockphoto.com/photo/beautiful-sunrise-cloudy-sky-from-aerial-view-gm1131335393-299526382
https://www.istockphoto.com/photo/antique-black-and-white-photograph-of-england-and-wales-portsmouth-harbour-gm1133533059-300874113
https://en.wikipedia.org/wiki/Fridtjof_Nansen#/media/File:Fridtjof_Nansen_LOC_03377u-3.jpg
https://www.istockphoto.com/vector/floral-rectangular-frame-fairy-tale-style-decorative-border-vertical-orientation-gm1125621220-295986828