Treasure hunting is broad church encompassing the traditional metal detector crew right up to the multi-million pound professional wreck salvage companies. I was amazed to discover just how valuable some of these sunken 17th century Spanish treasure ships were. There's a salty whiff of romance about the subject so even if you're strictly an armchair hunter you can still go online and enjoy the tales of derring do and fabulous discoveries. Click through to my treasure hunting Webwise in the Sunday Times. Pieces of eight.

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