This report explores the climate impacts of marine aquaculture against this backdrop of climate mitigation as a global and domestic priority. It is based on a series of interviews with scientists and marine aquaculture experts and a comprehensive review of existing scientific literature (peer-reviewed studies, white papers, and government reports, etc.) related to the climate impacts of farming finfish, shellfish, crustaceans, and seaweeds. Particular attention was paid to papers and reports published in the last decade; many were published in just the last three years. The goal of this report is to present the state of the science, synthesize the existing literature, and summarize key themes.