AdvertisementJonathan, the world's oldest tortoise, marks his 190th with fanfare and salad cakeUpdated December 07, 2022Rachel TreismanfacebookEmailJonathan chills on the lawn of Plantation House, the residence of the governor of St. Helena, in October 2017. The world's oldest tortoise is celebrating what is believed to be his 190th birthday this year. (AFP via Getty Images)This article was originally published on December 07, 2022.