How do fishes survive in salty water
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because there kidney is adapted to execrete lots of salt.in this way there salinity in blood also increase.
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Most fish that live in the ocean tend to lose water--the high salt content of the ocean causes water to constantly flow out through the fish's gills. ... And because seawater is so salty, they also must pump out the excess salt, both through their kidneys and using specialized cells in their gills.
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