A new study has uncovered the secret behind the remarkably long lifespan – up to 400 years – and sustained vision of the Greenland shark. Researchers discovered that these sharks possess genetic mechanisms capable of repairing damage to the DNA within their retinas. This unique ability allows them to maintain clear eyesight throughout their incredibly extended lives. The findings highlight the shark’s exceptional DNA repair capabilities, specifically targeting the eye tissue. Scientists believe this discovery holds significant potential for future medical research, possibly offering insights into treatments for age-related vision loss in humans. Further investigation into these genetic mechanisms could lead to breakthroughs in understanding and combating DNA damage. The study suggests an evolutionary adaptation contributing to the shark’s longevity and visual acuity.