This publication is the fourth in a series of knowledge publications prepared by the UNDP-GEF International Waters programme that document and highlight key results and achievements at the project and portfolio level, comprising four ‘signature’ programme areas: Large Marine Ecosystems; Lakes, Rivers and Aquifers; Integrated Water Resources and Coastal Area Management; and Global Programmes. The portfolio continues to make progress in sustaining the world’s most significant shared water systems for the billions of people who depend on these ecosystems for their livelihoods and security.

The objective of ‘Green Economy in a Blue World’ is to analyse the challenges and opportunities of a potential transition towards a green economy in key sectors heavily linked to the marine and coastal environment – the blue world. The report will also analyse the necessary policy and institutional adjustments required for a green transition and will highlight several transformative action items that could come out of Rio+20 to accelerate transition to ocean sustainability. The key sectors (chapters) covered include Fisheries, Transport (shipping), Tourism (coastal), Energy, Marine mineral resources, and ocean nutrient pollution.