My research interests centre on the interplay between gene flow and natural selection, particularly in marine animals. Gene flow and selection are fundamental processes as they determine how genes, organisms, and populations respond to their ecological surroundings and they are also central to the process of speciation. My research includes work on fishes, corals, and other animals (particularly through collaborations and students). I have a long-standing interest in understanding how contemporary and historical factors have influenced connectivity among marine species with planktonic larvae and what this connectivity means for determining conservation priorities. In the last few years, I have become particularly interested in using population genetic data in a comparative framework, particularly synthetic analyses of previously published data. I am also interested in the role that natural selection and adaptation play in structuring genetic variation especially in the context of hybridization, invasive species, and range expansions.