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Do sea fish and sea mammals drink sea water and if they do how do they eliminate Sodium?

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Fresh water fish do not drink water, they absorbed it through their skin, like osmosis. Sea water fish do drink water, and excrete the salt through their gills.

The salmon, which lives in both in environments, gets its water like a fresh water fish when in fresh water and like a sea water fish when in the sea.
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Do sea lions drink water?

Not usually, sea lions do not drink water. This is because it is  saltwater, although they have been spotted drinking it before.

Why can't we drink sea water?

Sea has lots of salts and many of them are even poisnous for  human body. Sea water can be drunk after purifying it like many  states including but not limited to Gulf state

Is it safe to drink sea water?

No, it is not. Not only is the salinity far too high, but there is a large amount of bacteria in any ocean water.

Can you take sea water and drink it?

On average, seawater in the world's oceans has a salinity of about 3.5%. This means that every kilogram, or every litre, of seawater has approximately 35 grams (1.2 oz) of dis