Cussler began writing novels in 1965 and published his first work featuring his continuous series hero, Dirk Pitt, in 1973. His first non-fiction, The Sea Hunters, was released in 1996. The Board of Governors of the Maritime College, State University of New York, considered The Sea Hunters in lieu of a Ph.D. thesis and awarded Cussler a Doctor of Letters degree in May, 1997. It was the first time since the College was founded in 1874 that such a degree was bestowed.

Cussler was an internationally recognized authority on shipwrecks and the founder of the National Underwater and Marine Agency, (NUMA) a 501C3 non-profit organization (named after the fictional Federal agency in his novels) that dedicates itself to preserving American maritime a