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 (Image courtesy of Bangor University)





