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Endangered, Vulnerable, and Threatened Species
Alligators and Crocodiles

How can crocodiles sink and stay under water?


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July 06, 2008 1:53PM

crocodile'ability to sink in water lies in a diiference in its haemoglobin.this difference allows an increase in hydrogen carbonate ion,resulting from the increase in carbon dioxide gas,to release more of the oxygen carrying by the crocodile haemoglobin,enabling the crocodile to survive under water.