Rivers of Pearl
'An average day's fishing depends on what river you are fishing. I was on the Spey last week and I was averaging 11 pearls a day - saleable
Pearls I mean - some of them worth E5.'
The tools of his trade are a glass-bottomed bucket and a cleft ash stick. His job is an eternal treasure hunt - he is Bill Abernethy, the only man in Britain to have on his passport, 'Profession, pearl fisher'.
Producer BRIDGET WINTER (R)