Tabla de Contenidos: “…From the discovery of the alga in Monaco to its arrival in France -- The alga grows, and the polemic begins -- Caulerpa taxifolia, superstar -- The stakeholders squabble, and the alga spreads -- Research progresses, and the polemic persists -- Chiaroscuro: 1997-1998 -- The three lessons of Caulerpa -- The spread continues in the Mediterranean -- The biology of Caulerpa taxifolia as known in 1991 -- Chronology of a heralded invasion -- Table of measures -- Acronyms of organizations -- Diagram of the French government…”