description Greenland Shark Overview
The Greenland shark (*Somniosus microcephalus*) is a deep-sea shark species notable for its exceptional longevity. Scientists estimate individuals can live over 400 years, making it the longest-lived vertebrate known. Primarily found in Arctic and North Atlantic waters, this large, slow-moving fish is of interest to researchers studying aging, marine biology, and deep ocean ecosystems.
help Greenland Shark FAQ
How long can Greenland sharks live, and how do scientists estimate that?
Research commonly cites lifespans that can exceed 400 years, with estimates using radiocarbon methods from eye lens proteins. Because direct birth records are unavailable, most modern references treat these figures as approximate but still extraordinary.
Why don't many people encounter it despite its range?
It lives mostly at depth and in cold, remote waters where human observation is limited. Commercial capture is uncommon, and many observations come from scientific survey work or by-catch reports.
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