Known under several titles including LES GLOUTONNES (1973) and LES EXPOILTS EROTIQUES DE MACISTE DANS L'ATLANTIDE this is another of Franco's Fantasy/Adventures from the 1970s that I have yet to see. The description on IMDb makes it sound very interesting -
"According to legend, a group of women escaped from Atlantis just before the destruction of the continent. They took refuge on a mysterious island, and founded a kingdom. Men who dared approach the island, were devoured by these sexually voracious Atlanteans, and thus they were called "gobblers"."
Sounds like there is LOTS of sex! What a surprise.