Mariana Trench Descent
0m
1.0 atm
Surface
200m
21 atm
Sunlight fades
1,000m
101 atm
Midnight zone
4,000m
401 atm
Abyssal plain
6,000m
601 atm
Hadal zone
10,935m
1,099 atm
Challenger Deep
At bottom: 1.1 tonnes/cm² — 1,000× surface pressure