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Some shark species grow astonishingly slowly and live for a very long time. In cold waters, slower metabolism can stretch their ‘calendar’ in remarkable ways.
Sharks make us think of speed and bite, not longevity. Yet some species are slow-motion residents of the ocean: they grow slowly, mature late, and live for many years.\n\nCold water slows metabolism and reduces growth rate. That can stretch the life cycle—like the body switching into an energy-saving mode.\n\nSurprising detail: long life can also mean vulnerability. Slow-reproducing species recover poorly from fishing pressure and environmental change because replacing losses takes years.\n\nThis matters for conservation. A species that doesn’t multiply fast isn’t ‘less important’—it’s often more fragile, and management must be designed accordingly.
