The SUMARiS project aims to put together the necessary knowledge and evidence in order to implement a species specific cross-border management strategy for rays and skates fishery in the 2 seas area. Thus the project will allow the fisheries professional organisations to switch from limited local scale to a cross-border perspective which is more suitable for the management of a straddling marine biological resource. By gathering the existing data and completing it, the fisheries professional and scientific partners from the 3 participating countries (and observe one) will be able to adopt an evidence-based joint management strategy, protecting less-known species and allowing economic balance for sustainable fishery activities. The up-to-date knowledge about the rays and skates stocks will allow to monitor the exploited zones in an appropriate way. The survivability exemption and the ability to handle correctly rays on board will allow fishermen to release rays alive back at sea.