Plan Bleu (www.planbleu.org) is one the Regional Activity Centres of the Mediterranean Action Plan (MAP) of United Nations Environment Programme (UNEP). Plan Bleu produces studies and scenarios for the future in order to raise awareness of Mediterranean stakeholders and decision-makers regarding environment and sustainable development issues in the region. Supporting transition towards green and blue economies in the Mediterranean region is a key issue for our organization. Plan Bleu, acting as a Mediterranean Observatory on Environment and Sustainable Development, has developed an experience in collecting, managing and disseminating data on Sustainable development issues in the Mediterranean Region. Plan Bleu leads also the MED 2050 project, an ambitious foresight exercise designed as an original science-policy interface, aiming at mobilizing decision makers and stakeholders from the North and South of the Mediterranean, going beyond geographical and institutional borders. Its goal: confront several possible visions of the Mediterranean future by 2050 (with an intermediate step at 2030) and co-construct solid and grounded transition paths towards common goals.