Why Can't Humans Drink Seawater?

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Why Can't Humans Drink Seawater?
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Water, water, everywhere, but why can't we drink any of it? 🥛 engineering

Why Can't Humans Drink Salt Water?

The problem with drinking seawater is that for land mammals like us, drinking salt water actually causes dehydration. There are a few land mammals that are known to occassionally drink seawater, like otters and sea lions, but even marine mammals like whales and dolphins don't rely on water from the ocean to stay hydrated internally.is that in order to maintain a healthy balance of salt in our blood, any excess salt needs to be filtered out by our kidneys and converted into urine.

notes, in the case of the albatross, it actually has a special gland that filters out the salt from the water it gulps up, and secretes it from its beak. examinations of the urine of seals and sea lions show a much saltier urine than your typical human, as much as two and a half times as salty as seawater, or about seven to eight times saltier than their blood.

In all cases though, all mammals get some water from the foods they eat, humans included, some just get more of their water from food than others. In the case of California sea lions, a study showed that they can get all the water they need just from eating fish. Other sea-dwelling mammals can produce sufficient fresh water internally from the metabolic breakdown of food .

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