Dr. Ballard, a renowned expert on marine geology and ocean physics, is a true modern explorer--the man who discovered the underwater remains of the Titanic. Here, this brave and brilliant adventurer tells the story of his remarkable career and recounts all of his important breakthroughs. With stunning photos and exciting new information, Explorations is an essential contriubtion to scientific and naturalist writing. 416. Three 16-page full-color inserts.