This report assembles quantitative estimates of marine carbon stores, sequestration rates and emission rates relevant to Scotland. Where specific Scottish data is not available (e.g. fishing fleet emissions) UK values have been used. For comparative purposes UK, European and global values have also been presented. The aim of this report is to provide a quick and comprehensive reference source for those working in marine management, policy or science to facts and figures concerning marine carbon stores, sequestrations and emissions as available in 2019.