The 4th International Marine Protected Areas Congress, IMPAC4, will be held in La Serena-Coquimbo, Chile, September 4th to 8th of 2017. We are excited to announce IMPAC4 and invite the global community of marine protected areas, MPAs´ practitioners, scientists and friends to join this congress from all over the world. IMPAC4 is organized by the Government of Chile, through the Ministry of the Environment and IUCN/WCPA.