G.P.E.S.

Medes Islands, Spain

Okay, so G.P.E.S. is a French outfit, actually based in La Ciotat, which is a bit of a trek from Medes Islands. If you're looking to dive the Medes, you'd be booking a trip with them from La Ciotat, rather than just showing up at a local shop. They focus on club-style diving, running regular trips on their boats, which means you'd be diving with a consistent group of people. This setup probably suits French-speaking divers who prefer a social, club atmosphere and don't mind travelling for their dives. Think of it less as a typical dive centre and more as a dive club that organises occasional excursions to places like Medes.