Aldabra giant tortoise
Large tortoises are among the longest-lived animals. Some individual Aldabra giant tortoises are thought to be over 200 years of age, but this is difficult to verify because they tend to outlive their human observers. Adwaita was reputedly one of four brought by British seamen from the Seychelles Islands as gifts to Robert Clive of the British East India Company in the 18th century, and came to Calcutta Zoo in 1875. At his death in March 2006 at the Kolkata (formerly Calcutta) Zoo in India, Adwaita is reputed to have reached the longest ever measured lifespan of 255 years (birth year 1750). Today, Jonathan, a Seychelles giant tortoise ("A. g. hololissa"), is thought to be the oldest living giant tortoise at the age of years and Esmeralda is second at the age of years, since the death of Harriet at 176, a Galapagos giant tortoise. Esmeralda is an Aldabra giant tortoise.
Harriet (tortoise)
Harriet (c. 1830 – 23 June 2006) was a Galápagos tortoise ("Geochelone nigra porteri") who had an estimated age of 175 years at the time of her death in Australia. Harriet is one of the longest-lived known tortoises, behind Tu'i Malila, who died in 1965 at the age of 188, and possibly Adwaita, who died in 2006 at an estimated age of between 150 and 255 years.