SINK IN THE OCEAN

1. https://www.atlasobscura.com/articles/what-is-a-saturation-diver
2. https://www.navalhistory.org/2012/07/23/sealab-i
3. https://www.medicaldaily.com/breaking-point-how-much-water-pressure-can-human-body-take-347570
4. http://www.waterencyclopedia.com/La-Mi/Light-Transmission-in-the-Ocean.html
5. https://dive.site/blog/scuba-diving-risks/
6. https://forscubadivers.com/commercial-diving/the-challenges-of-diving-the-worlds-deepest-dives/
7. https://www.atlasobscura.com/articles/what-is-a-saturation-diver
8. https://en.wikipedia.org/wiki/Heliox
9. https://ocean.si.edu/ecosystems/deep-sea/deep-sea
10. http://www.deepseachallenge.com/the-expedition/the-experience/