Adwaita is estimated to have been at least 255 years old. If this latter estimate can be confirmed, Adwaita will have been the oldest known tortoise of modern times, living longer than Harriet by 80 years, Tu'i Malila by 67 years and Jonathan by 65 years.
Adwaita's age is estimated to be at least 255 years. If this assertion can be confirmed, Adwaita will have set a new benchmark for longevity among tortoises, outliving Harriet by 80 years, Tu'i Malila by 67 years, and Jonathan by 65 years.