Frank J. Millero is a world-renowned marine researcher and professor of undergraduate and graduate courses at the University of Miami’s Rosenstiel School of Marine and Atmospheric Science for the past 46 years. His research focuses on the application of physical chemical principles to natural waters. He uses chemical models to understand how ionic interactions affect the thermodynamics and kinetics of processes occurring in the oceans. These studies have resulted in numerous research cruises in the Indian, Pacific, Atlantic, and Southern oceans and the Arabian Sea. Over the years, he has received a number of awards for his teaching and research accomplishments. He serves as an associate editor for a number of journals and is presently editor-in-chief of Marine Chemistry.