The Society for Atlantis Studies was a French organisation founded by Paul Le Cour and Roger Dévigne in 1925, but split soon afterwards. During a meeting of the society in the Sorbonne in 1929 a delegate threw two tear gas bombs in order to prevent a speaker from promoting the idea of Corsica being the location of Atlantis.
The association is still functioning and today also has a website(a) and continues to publish a journal, Atlantis, both in French with some English translation on the website. The organisation still reflects the esoteric approach of Le Cour and quite frankly seems little concerned with the scientific search for a physical Atlantis.
(a) https://www.atlantis-site.com/index.php (offline February 2017)