An article published in the journal “Scientific Reports” describes a research on the biggest system of stromatolites existing today. In Hamelin Pool, Shark Bay, Australia, an international team led by the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science collected data between 2012 and 2014 to map eight “stromatolite provinces” each characterized by distinct morphological structures, many of which were previously unknown. The microbes that live in those communities offering clues to those that lived in the first part of Earth’s history.