For two decades, Mr. Stemm and his colleagues have probed the deep sea, using sonar and robots to discover scores of interesting wrecks and thousands of artifacts. They have found treasures valued at hundreds of millions of dollars.
At the news conference, Jason Williams, a television producer for the Discovery Channel, said four tons of gold coins would fetch about $125 million if melted down or $1 billion if sold for their historical value.
Who said there are no adventures in the modern world?