A clam dredged from icy Arctic waters is being hailed as the world’s longest-lived animal. Climate researchers at Bangor University in the United Kingdom recently counted 405 annual growth rings in the shells of a quahog clam, which was found in the deep waters off the northern coast of Iceland.

Quahog clams are known for their longevity. A 220-year-old taken from American waters in 1982 holds the official Guinness Book of World Records oldest animal title. Unofficially, the record belongs to a 374-year-old Icelandic clam housed in a German museum. [Nationalgeographic]

405-year-old quahog clam
405-year-old quahog clam (Image courtesy of Bangor University)


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