Answer :

Because of a layer of fat called blubber that covers their entire body beneath the skin, whales can survive in deep or icy arctic water. Compared to the fat present in other mammals, blubber is substantially thicker.

The lungs of marine mammals are substantially larger than those of humans, allowing them to breathe in more air with each breath. Additionally, each time they inhale and exhale, they exchange more air. Additionally, their red blood cells contain more oxygen. Contrary to the buoyancy supplied by water, their bodies are not built to support that amount of weight on land.

Without the buoyancy and weightlessness of the ocean to support it, the whale's own body weight would destroy its organs after only a few minutes on land. Whales are marine mammals that live best in the ocean, but they cannot survive in freshwater conditions, at least not for very long. In actuality, all species of whales that are currently understood prefer saltwater habitats to freshwater ones for a variety of reasons.

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