Greenland sharks can live 400+ years — and they aren’t blind after all. New research shows their vision genes and eye tissue stay intact for more than a century, even in the ocean’s dim twilight zone where they live.

Adapted for low light, their eyes may help locate prey — and could even offer clues for preserving human vision over the long term.

by Bobby Bascomb
https://news.mongabay.com/short-article/2026/01/greenland-sharks-retain-functional-vision-despite-extreme-longevity/

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