How do sperm whales and Cuvier’s beaked whales dive to depths of over 2km without imploding?
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Forget the whales, what about the sea creatures literally at the bottom of the ocean !?
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Whales are not filled with compressible air when they dive. They actually exhale before diving and store the needed oxygen in the blood.
The best way to explain this is with a bottle.
A closed bottle will slightly implode because the outside pressure becomes greater than the inside pressure. But an open bottle can just fill with water and not implode because the pressure on both sides is the same.
Liquids like water don’t compress no matter how hard you squeeze them.
Gases like air do compress when you squeeze them.
Whales are mostly filled with liquid.
Submarines are mostly filled with air.
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