The body fluid of sharks has a much lower concentration of sodium chloride than that of the surrounding seawater, and sharks are able to remain in osmotic equilibrium with the external environment. How can this be the case?.

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23-08-2022
Biology

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The body fluid of sharks has a much lower concentration of sodium chloride than that of the surrounding seawater, and sharks are able to remain in osmotic equilibrium with the external environment. How can this be the case?.

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alinakincsem alinakincsem · Answer 1 · 2022-08-30T09:36:11-04:00

The body fluid of sharks has a much lower concentration of sodium chloride than that of the surrounding seawater because they retain enough urea to match the concentration of the seawater in the surrounding.

Sharks are marine fishes and are found in the marine environment.

They have certain types of modifications such as cartilaginous and osmoregulatory adaptations that enable them to endure the salt concentrations of the seawater.

Sharks can survive in marine waters because they have completely developed kidneys and accumulate high amounts of urea in their bodies.

This makes their body hypertonic and results in a net inflow of liquid.

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