The man who found the Titanic is on a new quest

In a career that's spanned more than 60 years, Robert Ballard has conducted over 150 underwater expeditions and made countless significant scientific discoveries, but his biggest find has always been the Titanic.

(CNN) — In a career that's spanned more than 60 years, Robert Ballard has conducted over 150 underwater expeditions and made countless significant scientific discoveries. But the renowned oceanographer says he's made peace with the fact that he will probably always be known as "the man who found Titanic." According to Ballard, his mother predicted he'd never be able to escape that "rusty old boat" when he called to tell her he'd located the famous shipwreck in 1985.