writes "In 2006, climate change experts from Bangor University in north Wales found a very special clam while dredging the seabeds of Iceland. At that time scientists counted the rings on the inside shell to determine that the clam was the ripe old age of 405. Unfortunately, by opening the clam which scientists refer to as "Ming," they killed it instantly.
Cut to 2013, researchers have determined that the original calculations of Ming's age were wrong, and that the now deceased clam was actually 102 years older than originally thought. Ming was 507 years old at the time of its demise.
“But we are absolutely certain that we’ve got the right age now.""Link to Original Source