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.