Ballard, Robert, Explorations: A Life of Underwater Adventure. New York: Hyperion, 1995.
Ellis, Richard, Deep Atlantic: Life, Death, and Exploration in the Abyss. New York: Knopf, 1996. The illustrations alone make this a joy!
Ellis, Richard, Imaging Atlantis. New York: Knopf, 1998.
Kunzig, Robert, The Restless Sea. New York: Norton, 1999. An extremely well-written, enjoyable book that gives one a sense of the importance and breadth of oceanography.
Verne, Jules, Voyage au Centre de la Terre. Paris: 1864. (English translation: Voyage to the Center of the Earth. New York: Kensington, 1999.)
Verne, Jules, Vingt Mille Lieues Sous les Mers. Paris: 1870. (English translation: Twenty Thousand Leagues Under the Sea. Annapolis, Md.: United States Naval Institute, 1993.)