Oldest Known Living Turtle in 2025
As of the latest public records, the oldest known living turtle is Jonathan, a Seychelles giant tortoise residing on the island of Saint Helena. He is widely recognized as the oldest verified living land animal. His estimated birth year is 1832, which would make him over 190 years old today. The Guinness World Records lists him as the oldest known living terrestrial animal. Jonathan continues to receive regular veterinary care and a specialized diet at the Governor's House on Saint Helena. His longevity is attributed to a combination of genetics, low predation pressure, and consistent human care in a protected environment. Guinness World Records provides the official documentation for his age claim.
Jonathan's status as the oldest turtle alive is based on historical documentation and ongoing veterinary assessments. He was brought to Saint Helena from the Seychelles in 1882 as an adult, already estimated to be around 50 years old at the time. This placement aligns with his claimed hatch date of 1832. The local government and veterinary team monitor his health through regular checkups, weight tracking, and dietary adjustments. His current condition is described as stable, though he has lost his sense of smell and sight in recent years. The Saint Helena government maintains a dedicated page confirming his continued residence and care status. Government of Saint Helena publishes updates on his well-being and habitat conditions.
Other Long-Lived Turtle Species and Records
While Jonathan holds the title for the oldest verified living turtle, other species are known for exceptional lifespans. Galápagos giant tortoises and Aldabra giant tortoises regularly live beyond 100 years in captivity and the wild. The oldest recorded Galápagos tortoise lived to an estimated 170 years before passing away in 2006. These species share traits such as slow metabolisms, hard shells, and isolated habitats that reduce external threats. Conservation programs now focus on protecting nesting sites and reducing human-related mortality. Forbes has covered the science behind extreme animal longevity, including turtles and tortoises.
In aquatic environments, certain sea turtle species also demonstrate remarkable lifespans, though verifying exact ages is more difficult. Green sea turtles and loggerhead turtles are believed to live 80 to 100 years or more in the wild. The oldest known sea turtle is often cited as a hawksbill named Myrtle, who lived at the New England Aquarium for decades. Exact age records for sea turtles rely on shell growth rings and tagging data rather than documented hatch dates. Threats such as habitat loss, fishing bycatch, and climate change continue to impact wild populations. Sea Turtle Conservancy provides data on species longevity and conservation efforts.
Factors Behind Turtle Longevity and Current Scientific Understanding
Scientists attribute the extreme longevity of turtles to several biological mechanisms. Their slow metabolic rates reduce cellular damage over time, while their shells provide effective protection from predators and environmental hazards. Telomere dynamics and DNA repair efficiency are also areas of active research. Studies on Aldabra and Galápagos tortoises show that their cells exhibit unusual resistance to oxidative stress. These findings have implications for aging research in other animals, including humans. Nature has published peer-reviewed studies on the genomic factors linked to tortoise longevity.
Conservation status and human intervention play a major role in whether these long-lived animals survive to extreme ages. Many turtle species are classified as vulnerable, endangered, or critically endangered by the IUCN Red List. Protected habitats, anti-po