Jacques-Yves Cousteau (1910-1997) the famous oceanographer, was also drawn to the Atlantis mystery. In 1967 he was due to join Spyridon Marinatos and James Mavor in an expedition to Santorini but the onset of the Arab-Israeli war prevented him from bringing his famous ship Calypso through the Suez Canal. He later did explore in the eastern Mediterranean and subsequently, in collaboration with Yves Paccalet, wrote his contribution to the Atlantis issue, in which he relates his investigation of the sea around Santorini. His search for Atlantis also revealed unexpected underwater stone formations off Crete.
A 1976 newspaper report(c) described Cousteau as having ‘debunked’ the reality of Atlantis, after his thirteen months of exploration in the Aegean.
A 1978 TV documentary, Calypso’s Search for Atlantis, is widely available, while most of it can be seen on YouTube(a)(b).