His father had come from Caen in 1891 to take up a professorship at the Académie des Sciences, the scientific faculty of the University of Poitiers.
Louis Dangeard studied geology in Paris and, in 1919 moved to the scientific faculty of the University of Rennes working as an academic assistant.
From 1922 to 1927[1] he took part in seven oceanographic expeditions organized by Jean Charcot with the research vessel Pourquoi Pas?.
These research trips covered the North Sea, the Bay of Biscay and in particular the English Channel.
The couple had six children: Henri, Yves, Alain, Anne, Armelle and Gilles Louise Marie.