the French Telethon and the French Muscular Dystrophy Association (AFM). In 2015, Ulliel signed The Calais Appeal, which asked the French government for an emergency plan to end the undignified living conditions that migrants and refugees were facing in the Calais Jungle. In August 2018, he signed a petition supporting Aquarius, the humanitarian ship chartered by the European sea rescue organization SOS Méditerranée and carried out in partnership with Doctors Without Borders, demanding the ship to be allowed to return to the sea and continue to rescue people in mortal danger in international waters after being prevented from saving refugees and turned back from the rescue zone off the coast of Libya in June 2018. In November 2018, he signed French magazine L'Express'''s petition against homophobic attacks. In 2020, he was one of the signatories of the tribune "Académie des Césars : nous n'avons aucune voix au chapitre" ("César Academy: we have no voice in the matter"), published on 10 February 2020 on the website of the French newspaper Le Monde asking for an in-depth reform of the César Awards Academy to remedy its "elitist and closed" functioning. In March 2021, he signed the petition of France's Society of Film Directors (SRF) entitled "Un jour sans fin" ("An Endless Day"), asking President Emmanuel Macron to reopen theaters in France following a decision to close them in 2020 due to the COVID-19 pandemic. Ulliel was an environmentalist and committed to planetary health. He said in a 2019 interview for Madame Figaro that he was trying to fly less frequently for the sake of the environment, "but only action by governments will really make a difference." In 2019, he signed the petition "Résister et créer" ("Resist and Create"), created by the movement On Est Prêt along with Cyril Dion to challenge the world of cinema at a time of mobilizations for the climate, and also narrated the campaign "Nos objets ont plein d’avenirs" ("Our objects have plenty of future"), designed by DDB Paris for Ademe and the Ministry of Ecological and Solidarity Transition, which highlights all the actions to be taken to extend the life of objects and help preserve the planet's resources and reduce the production of waste. While supporting the Monte-Carlo Gala for Planetary Health in September 2021, he said: "We are facing an unprecedented ecological crisis. Never before has our planet and life on earth been so threatened. [...]