Prof. Yoshiki Saito is a coastal sedimentologist and Quaternary geologist, and the Director of Estuary Research Center of Shimane University, Japan. He studies what sediments are distributed in the coastal zone and how they shape landforms, how the environment has changed over the past 10,000 years in response to Holocene sea-level changes, and how human activities have affected it. He has long studied coastal systems in Japan and mega deltas in Asia, including the Yellow River, Yangtze River, Mekong River, and Godavari River. He is a member of the Anthropocene Working Group and a voting member of the Subcommission of Quaternary Stratigraphy of the International Commission on Stratigraphy.