Thanks to Jacques Cousteau, diving in Provence is very popular and widely available. Essentially you can scuba dive all along the entirety of the Mediterranean coast. Among the best diving spots are Marseille, Hyères, and Cavalaire. Hyères gives an opportunity to discover the Mediterranian marine life at its best since it's a part of the National Park of Port Cros and a great number of fish species and aquatic plants can be found here. The seabed near Cavalaire, on the other hand, is famous for it's wrecked ships from different time periods starting with ancient Greece and even has some crashed planes. If you're not afraid of cool water, you should definitely try the strip along the Calanques with its amazing coral and rock formations. The best part is that most companies have diving opportunities for even absolute beginners.