This report aims to provide guidance on how to bring together traditional monitoring techniques with new technologies and data science in order to better monitoring our oceans in the context of the SDGs. The report focuses on the SDG indicators where UNEP is the custodian and responsible for global monitoring, including SDG 14.1.1(a) on coastal eutrophication; SDG 14.1.1(b) on marine debris, SDG 14.2.1 on marine area management and SDG 14.5.1 on protected areas and conservation.