The Galápagos tortoises are native to seven of the Galápagos Islands. They can live foe over 100 years in the wild, but a captive individual can live at least 170 years. They were over 250,000 tortoises in the 16th century but only 3,000 in the 1970s. With conservation efforts that started at the beginning in the 20th century, that number jumped to 19,000 at the start of the 21st century. Despite this rebound, the species is still in danger.