You can take a look to the special dives ( participatory sciences, wreks, artificial reefs, pond of Thau, night...) and marine biology dives schedule. We dive every day in summer, on Carnon and Palavas' spots. The weekly schedule is availaible on Facebook.
Marine biology level 1 courses (4 dives end 4 half days of courses)
from May the 21st tou the 24th
week ends of 29-30 september and 6-7 october
Level 3 courses (10 dives, courses, first aid course)
from 4 to 10 juin
from 8 to 10 october