Pushing the frontier of knowledge and conservation action for deep sea ecosystems

Expected Outcome:Project results are expected to contribute to all of the following expected outcomes:Member States and Associated Countries contribute to the implementation of area-based management tools, such as protection targets and adaptive management approaches for deep-sea regions under the Treaty on Biodiversity Beyond National Jurisdiction (BBNJ) and the Kunming-Montreal Global Biodiversity Framework (GBF), for Regional fisheries Management Organisations (RFMOs) and for transitions areas with the EU exclusive economic zone notably by identifying Ecologically and biologically significant marine areas (EBSAS), and informing the next Global Assessment of Biodiversity and Ecosystem Services;Public Authorities prioritise deep sea areas for inclusion in their 30% protection target while enhancing maritime spatial planning achieved through science-based information, habitat mapping and ecosystem-based approach, aligned with the EU strategies for biodiversity and climate adaptation by 2030. Scope:The deep sea represents 90% of the Ocean volume and remains the least explored biome of the planet. Nevertheless, we know that the deep sea forms an extensive and complex ensemble of ecosystems which functioning is crucial to the rest of the biosphere, global biogeochemical cycles and ecosystems upon which much terrestrial life, including human civilisation, depends. The critical limiting factors in the definition and implementation of protection and restoration measures are the lack of biodiversity knowledge and appropriate monitoring, especially in layers below 1000 m. The main reasons are the limited access and high cost of explorations of the diversity of biotopes in the deep sea, and the resources available to identify organisms across the full range of sizes (from microorganisms to megafauna) and describe ecosystems functioning.In line with the objectives and targets of the EU biodiversity strategy for 2030, the EU Nature Restoration Regulation, the Marine Strategy F