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Longest-lived vertebrate is Greenland shark: Lifespan of 400 years Greenland sharks live at least as long as 400 years, and they reach sexual maturity at the age of about 150, a new study reports. The results place Greenland sharks as the longest-lived vertebrates on Earth. The Greenland shark (Somniosus microcephalus) is widely distributed across the North Atlantic, with adults reaching lengths of 400 to 500 centimeters (13 to 16 feet).The biology of the Greenland shark is poorly understood, yet their extremely slow growth rates, at about 1 cm per year, hint that these fish benefit from exceptional longevity.
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