Integrated in the celebrations of its twentieth anniversary on February 29, 2020, CIIMAR organized the international SOS conference "Sustainable Ocean Strategies" at CIIMAR, Cruise Terminal of the Port of Leixões, with the participation of several world references conservation of the oceans like Nuno Vasco Rodrigues, Nancy Knowlton and Peter Heffernan. The message was focused on our links to ocean biodiversity, optimism and reasons for hope for our Ocean Planet.