I understand that the pressure can be 50 atmospheres: https://en.wikipedia.org/wiki/Deep_diving.
Okay, I understand also that the pressure is equal all around but if someone was put between two metal plates the pressure of 50 atmospheres would I guess certainly crush him mechanically, like the flesh on his bones would crushed against the bones or his bones themselves would break.
So how is oceanic/liquid pressure different? It just seems so obvious that 750 pounds/square inch would crush a person and yet this does not happen obviously.
I know this has been discussed before but I am asking very specifically: why is flesh being pressed against bone at 50 atmospheres not damaged while if you put your arm into a vise exerting such pressure the flesh would, I would bet money on, be ruptured at the cellular level.
EDIT: And if an individual cell is not damaged at 50 atmospheres, how much pressure does it take? I thought cells are quite fragile but maybe I am wrong. So, if experimentally we put human tissue in a test tube filled with water and increased the pressure, at what point would we see cell damage?