3 weeks ago
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Dorota Skowronska-Krawczyk watches a Greenland shark glide slowly through the dark waters of the Arctic on her computer screen.
"You see it move its eye," says the University of California, Irvine associate professor of physiology and biophysics, pointing to the footage. "The shark is tracking the light -- it's fascinating."
Greenland sharks are the longest-living vertebrates known to science, with some individuals surviving for as long as 400 years. Th...
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