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The same way as other animals with "lungs".

Air is taken into the body and gaseous exchange occurs with the red blood cells.

The "lungs" of a lungfish are much simpler in structure than those of a mammal. They are just simple sacs, rather then the spongelike structures of mammal lungs. The general way they work is the same as a mammal's lungs, but they are not as efficient, having a smaller surface area.

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17y ago

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