Here are the next three books in the bibliography:
Delgado, James P. Adventures of a Sea Hunter: In Search of Famous Shipwrecks. Vancouver: Douglass & McIntyre, 2004.
This book is solid and informative, but finding shipwrecks just seems too technical and less fun than in the days of Mel Fisher. (Reminder: see Daley's Treasure.) I need to reread this book; maybe it's more fun than I recall (since I read it on an airplane to Hawaii, restless with anticipation of the diving ahead).
Doubilet, David. Water Light Time. New York: Phaidon, 2006.
Excellent book of photographs, particularly underwater photographs and just-at-the-surface photographs, much less common (and much less sought after, I guess). I put this book next to the 3-D photos when I want to give someone the best sense of being in the water without spraying them with a hose or tossing them off a dock. In other words, visually effective and engaging.
Drumm, Russell. In the Slick of the Cricket: A Shark Odyssey. New York: Penguin, 1997.
If you have ever seen Jaws, well, you've met the main figure of this book through the crusty, obsessive shark-killing character played by Robert Shaw, though the Frank Mundus of Drumm's book is a bit smoother than the film's Quint. Mundus is the star of the show, though Drumm's descriptions are the key to the book's effectiveness. I have been tempted to use this book in English 93 or 96, both for the obvious attraction of any shark-story and for the portrayal of psychology in action. I felt salty after reading this book, though also a bit depressed. In this world, there are too many shark-killers and too many dead sharks, but that's the subject of a different book.