Researchers put six grey seals in a specially built tank to work out why they don’t drown – and discovered something unexpected - BBC Wildlife Magazine
Scientists from the University of St Andrews wanted to find out why seals don't tend to drown when diving underwater
Human freedivers can descend to significant depths on just one lungful of air. To do this they massively overbreathe beforehand to clear their systems of as much carbon dioxide (CO) as possible. This… [+2214 chars]
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