He only referred to the fact that air got thicker as it got down, until oceans.
Also, those pressures are kind of insane.
How would that even happen
hm
Sounds just like a gas giant.
And that's not the perfect place for life to start, honestly
Too chaotic.
And I know, Earth wasn't too pleasant, but it's not like the oceans were flying at thousands of miles per hour in every direction.