Answer :
The salinity of the ocean and oceanic animals are not related. Living organisms are not the cause of the salt in the ocean, so if the organisms no longer lived there, there would be no change.
The absence of animals will not affect the salinity of ocean water.
Relation of animals in ocean and salinity
Nothing will happen to the salinity of the ocean if animals were no longer living in it because animals and salinity of water is not related to each other.
The animals are not the source of salinity and not feed on it. The salts comes in the ocean from the water that flows from rocky mountainous regions so we can conclude that the absence of animals will not affect the salinity of ocean water.
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