A bowhead whale living today could have been born before the American Civil War. Scientists estimate the species can live more than 200 years, while 19th-century harpoon fragments found embedded in harvested whales provide extraordinary physical evidence of their longevity — making bowheads the longest-lived mammals known.
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Eye-lens chemistry and 19th-century weapons embedded in harvested whales reveal a mammal whose lifespan can extend beyond two centuries.
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