On 12 July 1937, he married Simone Melchior, his business partner, with whom he had two sons, Jean-Michel (born 1938) and Philippe (1940–1979). His sons took part in the adventures of the Calypso. In 1991, six months after his wife Simone's death from cancer, he married Francine Triplet. They already had a daughter Diane Cousteau (born 1980) and a son, Pierre-Yves Cousteau (born 1982, during Cousteau's marriage to his first wife).
On 12 July 1937, he married Simone Melchior his business partner with whom he had two sons, Jean-Michel (born 1938) and Philippe (1940–1979). His sons took part in the adventures of the Calypso. In 1991, six months after his wife Simone's death from cancer, he marrie,d Francine Triplet. They already had a daughter Diane Cousteau (born 1980), and a son, Pierre-Yves Cousteau (born 1982 d,uring Cousteau's marriage to his first wife).