Decompression Resistance Lets Baird’s Beaked Whale Avoid the Bends at Extreme Depth

It dives two miles down without suffering the bends.

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Decompression sickness occurs when dissolved gases form bubbles in the body due to rapid pressure changes.

Baird’s beaked whales perform repeated deep dives approaching 3,000 meters yet rarely exhibit signs of decompression sickness because their lungs collapse and limit nitrogen absorption under pressure.

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Human divers ascending too quickly from a fraction of that depth can experience nitrogen bubbles forming in blood and tissue, but this whale’s physiology prevents dangerous gas buildup during extreme pressure shifts.

Its decompression resistance demonstrates how evolution engineered biochemical and structural safeguards that outperform most human diving protocols in one of Earth’s most hostile environments.

Source

NOAA Fisheries

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