Why is waterpressure something that is holding us back to go very deep in the ocean?

Question

Would it crush the machine’s we’re using to explore depth? Would the pressure affect a human inside an exploring machine if the machine itself is strong enough to withstand the outside pressure, if so how? Would a full can of coke collapse if we would bring it very deep in the ocean? If so, how? Because what I heard is that a liquid can’t be compressed, so a full can off coke shouldn’t collapse right?

Thanks in advance

In: 8

Answer 1

We have built a structure which can withstand the greatest pressure in the oceans https://en.wikipedia.org/wiki/Bathyscaphe but the oceans are huge and a vessel can only move a relatively short distance so discovering what is down there is slow and expensive.