Professor Helene Marsh is the world’s premier authority on the ecology and conservation biology of dugongs. She is internationally recognised for her extensive research on their life history, reproductive ecology, population dynamics, diet, distribution, abundance and movements. Marsh’s research on dugongs and other marine megafauna has been instrumental in advancing the scientific understanding and management of coastal marine mammals in the global topics. Helene’s work integrates species ecology with a broader evaluation of the links between threatened species and the welfare of human societies, particularly in developing countries and among remote Indigenous Australian communities.