Robert Duane Ballard, Ph.D, (born June 30, 1942 in Wichita, Kansas) is an oceanographer most noted for his work in underwater archaeology. He is most famous for the discoveries of the wrecks of the RMS "Titanic" in 1985, the battleship "Bismarck" in 1989, and the wreck of the aircraft carrier USS "Yorktown" in 1998. Most recently he discovered the wreck of John F. Kennedy's PT-109 in 2002 and visited the Solomon Islander natives who saved its crew. Wikipedia
The definitive Wikipedia entry for Robert Ballard. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Robert_Ballard
Under the leadership of Dr. Robert Ballard, IFE has assembled an extraordinary team, uniting world-class deep-ocean engineers and oceanographers with renowned archaeologists and geologists. www.mysticaquarium.org/index.cgi/270