Jacques Dumas was born on the 23th October in 1926 at Dijon. He was a lawyer (he passed the bar in Paris in January 1950), an active diver, a seabed adventurer treasure hunter (he discovered several antique wrecks). After his demobilisation of the army he dedicated all his free time to the sea and hunting under sea before he would have turned his attention to scuba diving and underwater shooting (photos and films).
Member of the GPES (Groupement de Pêche et d’Études Sous-marines), the Hunters’ Club and the French Underwater Explorers (of which he was the President of for 5 years). He was also the Chairman of the Ile de France FFESSM.
In 1957, he was elected vice-president of the French Federation of Underwater Studies and Sports (1957/1960), Deputy Chairman (1961/1964), before he was elected president two times (from 1965 to 1968 and from 1972 to 1977).
After having fulfilled these functions, he was elected Honorary President of the CMAS.
In January 1959, he participated in the foundation of the World Confederation of Underwater Activities (CMAS) in Monaco, which, under the chairmanship of Commander Cousteau, coordinated and developped scuba diving around the world. After serving as Secretary General of the Confederation for fourteen years, Jacques Dumas became president of CMAS in 1973 (reelected in 1975, 1977, 1979, 1981 and 1983) until his death in Agadir (Morocco), March 22, 1985 due to a heart attack.
He established the Judicial Committees within the FFESSM and the C.M.A.S.
He directed numerous underwater films (e.g. La Vie des Amas, these Japanese divers) that received awards at numerous international festivals.
Being a lover of history, he discovered numerous antique wrecks and organized archaeological searches all around the world; research of the treasures of the Island of Coco; research of the treasures of Rommel, with Peter Flieg; the wreck of Banda with the Chinese porcelains of the wreck Ming; wrecks of the battle at Aboukir in 1798, in co-operation with prince Napoléon, the wreck of the India Company in Mauritius...
- Scuba Diving and the Law ( 1957 ), Published by Maritimes et coloniales.
- The Rights and Duties of a Scuba Diver ( Published by Cosmos, 1969 )
- Thailand ( 1980 ) Published by René Moser
- Fortune at sea ( 1981)
- The Golden Handbook of Diving, published by Glénat, ( 1983 ) preface by Alain Bombard.
- Federal Medal N° 35 - 1968
- Gold Medal of the C.M.A.S.
- Knight of the Legion of Honour - 1975