Ming (clam)
Hafrún ( 1499–2006) is a nickname given to a specimen of the ocean quahog clam ("Arctica islandica", family Arcticidae), that was dredged off the coast of Iceland in 2006 and whose age was calculated by counting annual growth lines in the shell. Hafrún was the oldest individual (non-colonial) animal ever discovered whose age could be precisely determined. Originally thought to be 405 years old, Hafrún was later determined to be 507 years old, although the clam had previously been killed to make this determination. Hafrún had a size of 87 mm × 73 mm. The clam was initially  named Ming by "Sunday Times" journalists, in reference to the Ming dynasty, during which it was born. Later, the Icelandic researchers on the cruise which discovered the clam named it Hafrún, a woman's name which translates roughly as 'the mystery of the ocean'; taken from , 'ocean', and , 'mystery'). The actual sex of the clam, however, is unknown, as its reproductive state was recorded as "spent". Original discovery. The clam was dredged off the northern coast of Iceland in 2006. In 2007, on the basis of counting the annual growth bands on the cross-sectional surface of the hinge region  of the shell, researchers announced that the clam was 405 years old. The research was carried out by researchers from Bangor University. In the process the clam died. Professor Richardson said that the existence of such long-lived species could help scientists discover how some animals reach such advanced ages. The mollusc’s long life came to an end in 2006 when the British researchers – unaware of the animal’s exceptional age – froze the specimen, killing it. Revision of age. In 2013, another assessment of the age of the clam was carried out counting bands which were measured on the  sectioned surface of the outer shell margin and this was verified by comparing the banding patterns with those on other shells that were alive at the same time; this confirmed that the clam was 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.