In 2010, the Xynthia storm hit the regions of Vendée and Charente-Maritime. Off the coast of La Rochelle, the island of Ré is seriously affected. In the North, the island of Noirmoutier is relatively spared, but remains largely exposed to the risks of sea submersion, considering its location below sea level. Since then, the State has put in place a coastal risk prevention plan. The study draws up an alarming report, deemed disastrous by some local elected officials and decried by local associations, who fear for the entire economy of the two islands, beyond the tourist aspects. What is the future of the Atlantic coasts?