It turns out ancient seafloor mapping looks a lot like seafloor mapping in the 1990s. We're starting off a short series on ocean bathymetry by talking about how we got started studying the shape of the seafloor.

Resources:

https://www.arcgis.com/apps/MapJournal/index.html?appid=4718c81ade5e4fada01797fc175c796e

https://www.frontiersin.org/articles/10.3389/fmars.2019.00283/full

http://www.waterencyclopedia.com/Oc-Po/Ocean-Floor-Bathymetry.html

https://oceanexplorer.noaa.gov/explorations/03mountains/background/challenger/challenger.html

https://divediscover.whoi.edu/history-of-oceanography/the-challenger-expedition/

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