Born in Chamonix, in France, Paul-Henri Nargeolet lived in Africa with his parents for 13 years. After a 22-year career in the National Marines, he was awarded the grade of Commander. He then joined the French institute for Sea Exploration (IFREMER) where he specialized in deep sea exploration in 1986. The following year, he led the first recovery mission on the Titanic.
He is the Director of the Underwater Research Program for RMS Titanic, Inc. (USA).