The concept of ‘seal-fishery conflict’ is used when referring to the complex contradictions stemming from seals’ impacts on fishing livelihoods, a pertinent social struggle between stakeholder groups of the Baltic Sea. Tensions are most remarkable between coastal fisheries and seal conservationists. As existing knowledge has been scattered and the conflict has become increasingly problematic, the RESOCO project compiled Nordic knowledge and best practices and build an interdisciplinary synthesis to set the stage for alternative solutions on how to effectively reconcile the seal-fishery conflict in the Baltic Sea. The report takes a pragmatic stand by turning the attention to approaches and instruments that have been suggested to be helpful or that have the potential to help mitigate the conflict. The report synthesizes knowledge and presents existing gaps and needs of further research.