crocodiles breathe through lunges then how do the manage to stay in water ??
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Crocodilians have a four-chambered heart – just like people! ... After a short period of time underwater, the oxygen in the lungs is gone (crocodilians will typically expel air in order to sink, anyways). Crocodilians have a small opening called the Foramen of Panizza between their left and right aorta of the heart.
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