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A large pond near our house (in Shropshire) often has empty swan mussel shells on the shore.
This one is the biggest we've found yet at 19cm. My kids want to know if this is a record! Counting the rings is difficult but it seems there are at least 80. Would this put it at 80 years old?
Thanks for your help.
Robin (& Connor, aged 10; Eleanor, 9; and Marina, 6)