ginti
Contributor
Yes and noOi @ginti this is your reminder, did you find out more information?
So I spoke with some divers who often dive in France, but they're not French. They agree that firefighters are probably who would come, but the distribution is not well known, and sometimes ambulance could be closer... So when in doubt call 112, which is European and well connected with any service. In theory at least...
In practice, better stay in touch with someone expert in the area. For instance, Oli in the Lot, or just write down the number of the closest hyperbaric chamber, etc.
In two weeks I will be diving in Marseille, I will speak with the owner of the diving center and let you know (if I remember)