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Sperm whales make some of the longest dives achieved by mammals, with some lasting up to 90 minutes, while dolphins and other whales can stay underwater for 20 minutes. The longest time a human has held their breath for under water is 19 minutes â set by a Swiss freediver called Peter Colat.
Unlike humans, many whales can go on hour-long dives without needing to breathe. But no one has been sure how they did it. Now, new research shows it all comes down to a specially adapted oxygen-binding protein in the animals' muscle tissues â a finding that could someday prove valuable in medicine. Advertisement.