Join Cousteau online immediately after the show at 16:00 GMT for a live one-hour Twitter chat about ocean health and how you can help promote and preserve biodiversity beneath the waves . Environmental advocate Philippe Cousteau hosting a Going Green : Oceans special . The film is directed by the French filmmaker Yann Arthus-Bertrand, who has made documentaries about coral reefs and other marine life in the Indian Ocean for National Geographic. Watch Friday March 29 at 15:30 GMT ( 11:30 ET ) Join Cousteau for Twitter chat immediately after show # CousteauCNN .
Environmental advocate Philippe Cousteau hosting a Going Green : Oceans special . The film is directed by the French filmmaker Yann Arthus-Bertrand, who has made documentaries about coral reefs and other marine life in the Indian Ocean for National Geographic. Watch Friday March 29 at 15:30 GMT ( 11:30 ET ) Join Cousteau for Twitter chat immediately after show # CousteauCNN .