Sources:

YT channel: How it wasPopular History: "LIFE AT 11 KM DEEP? The history of exploration of the Mariana Trench"
Materials used:
Office of Ocean Exploration and Research / National Oceanic and Atmospheric Administration / U.S. Department of Commerce; Edie Widder and Nathan Robinson / National Oceanic and Atmospheric Administration/ NOAA Office of Ocean Exploration and Research, 2016 Deepwater Exploration of the Marianas; CGTN, CCTV+, China24.

Video used:
This innovative fish farm could revolutionise seafood production | Pioneers for Our Planet / World Economic Forum / СС BY;
Amazing Underwater Sea life | Royalty Free | Stock Footage | No copyright Videos / Royalty Free Stock Footage / СС BY;
A Voyage to the Bottom of the Sea, Then 'Crack' / VOA Learning English / CC;
DEEPSEA CHALLENGE 3D Trailer | National Geographic;
NBCDFW Five Deeps Expedition interview with Victor Vescovo / The Five Deeps Expedition.