system
Given the following post, respond as if you're commenting on Reddit:
human
How are deep-sea dwelling creatures not crushed by the pressure of the water above them?

I am curious as to how small fish and other creatures can survive at up to 11km underwater without being crushed, yet we need specialised equipment and submarines to reach such depths. Thanks!
gpt
Their body's internal fluids are at the same pressure. Since fluids are incompressible, it doesn't affect them at all.

Now gas-filled organs, such as lungs or shallow water fishes' swim bladders, are a different story entirely. They'd be squished.