Jonathan is a Seychelles giant tortoise, a subspecies of the Aldabra giant tortoise. His age is estimated to be 193 as of 2026, making him the oldest known living land animal as well as the oldest verified tortoise in recorded history. He was officially named in Guinness World Records "Icons" list. Jonathan lives on the grounds of the Plantation House on Saint Helena, a British Overseas Territory in the South Atlantic Ocean.