The overall objective of this report is to review national planning reporting mechanisms under the Regional Seas Conventions and Actions Plans (RSCAPs), select relevant case studies, and analyse possible harmonization between the Convention of Biological Diversity (CBD) national reporting and the RSCAPs national reporting. Even though the compliance reflects a state of fulfilling the obligations of multilateral environmental agreements (MEAs), and the implementation is bound to the various measures undertaken to comply with MEAs, this report is expected to offer a contribution to the work of the RSP in a number of ways, placing a much needed emphasis on national reporting and helping to improve implementation measures.