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Why can’t we breathe underwater ? | Natural Hub

Exploring the depths of the seas with all the richness they contain, fish of all colours, luxuriant vegetation and caves, has fascinated humans for decades. But is this possible without using scuba diving equipment?

Well, no, because humans can’t breathe underwater. Our respiratory system is based on two stages, inhalation and exhalation.

Our lungs breathe in oxygen and exhale carbon dioxide. The oxygen used by humans is in its gaseous form, and unfortunately for us, the oxygen in the water is dissolved and our lungs are unable to extract it.

Fish need their gills to pump water from their mouths and extract oxygen from them.

So, to breathe underwater, you must have gills.

Man can always realize his deep-sea dreams by taking air with him to breathe.

Ref: Knowledge:

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