The International Graduate Course "Ecology and Diversity of Marine Microorganisms" ECODIM was established in 2000 as part of the International Graduate Course Series in Oceanography at the Austral Summer Institute of the University of Concepción, Chile.

Over the years, more than 120 students from 14 countries (Chile, Argentina, Uruguay, Brazil, Venezuela, Colombia, Ecuador, Egypt, Peru, Mexico, Cuba, Canada, Spain and France) have participated in the ECODIM course.

The last version of ECODIM –ECODIM IX- was held in January 2016 at the Marine Biological Station of the University of Concepcion in Dichato, Chile.