The so-called pearl of the French Caribbean, Guadeloupe is a butterfly-shaped archipelago of five main islands where volcanoes tower and 200-plus beaches come in shades from black and white to red and pink. Basse-Terre’s tropical forest and the bay of Grand-Cul-de-Sac Marin were declared a UNESCO Biosphere Reserve in 1993. From there, island-hop to discover Grande-Anse beach on Les Saintes; Marie-Galante’s rum estates (and old-fashioned oxcarts); and La Desirade’s 900-foot plateau.
Since airline reservation requests are often made by city-pair (such as "show me flights from Chicago to Düsseldorf"), an airline that can codeshare with another airline for a variety of routes might be able to be listed as indeed offering a Chicago–Düsseldorf flight. The passenger is advised however, that airline no. 1 operates the flight from say Chicago to Amsterdam, and airline no. 2 operates the continuing flight (on a different airplane, sometimes from another terminal) to Düsseldorf. Thus the primary rationale for code sharing is to expand one's service offerings in city-pair terms to increase sales.