Ming Clam age is determined to be 507 years old

Ming (c. 1499 – 2006) was a nickname given to a specimen of the ocean quahog clam (Arctica islandica, family Veneridae), that was dredged off the coast of Iceland in 2006 and whose age was calculated by counting annual growth lines in the shell. Ming was the oldest individual (non-colonial) animal ever discovered whose age could be accurately determined. Originally thought to be 405 years old, the clam was later determined to be 507 years old.

Ming Clam

In 2013, another assessment of Ming’s age was carried out counting bands which were measured on the sectioned surface of the outer shell margin  and was confirmed by comparing the banding patterns with those on other shells that were alive at the same time; this determined the clam to have been about 507 years old when it was caught. The revised age estimate is also supported by carbon-14 dating; marine biologist Rob Witbaard commented that he considers this second assessment accurate to within 1–2 years.