P(Bar) = 981 cm/s² * 12*2.54 * Z(ft) * (gm/cm³) * 1.0E-6 Bar/(dyn/cm²)
P(Bar) = 31.0 * Z(1000 ft)

Z(ft)	(gm/cm3)
0	1.028 (assume 35 parts-per-thousand salinity)
1000	1.033
2000	1.0375
20000	1.071

Z	P
320	10 Bar
3,200	100 Bar
3,790	120 Bar <Z> of all Oceans - depth of life Zone
4,690	145 Bar depth of Mediterranean
7,282	225 Bar depth of Gulf of Mexico
20,000	600 Bar max. depth of Atlantic
35,600	1100 Bar 1960 depth of Trieste into Chall.II (7 miles!!)

Notes:
Ratio of Volume of Ocean to Land (above Z=0) = 11
Ratio of Area of Ocean to Land: