Sunken Spanish galleons, sailing ships of the East India Company, steamships of the Californian, Australian and Klondike gold mines... The imagination pictures holds filled with gold and silver, precious stones and Chinese porcelain. How many treasures actually lie at the bottom of the sea? How are treasures of sunken ships found and recovered from the bottom in our time? What are the secrets of the most successful underwater explorers and treasure hunters? The next book in the series talks about this and much more. The book is addressed to a wide range of readers interested in underwater archaeology, the history of the Great Geographical Discoveries and navigation in general.