Conserve and sustainably use the oceans, seas and marine resources for sustainable development is UN Sustainable Development Goal 14.
"Advancing the sustainable use and conservation of the oceans continues to require effective strategies and management to combat the adverse effects of overfishing, growing ocean acidification and worsening coastal eutrophication. The expansion of protected areas for marine biodiversity, intensification of research capacity and increases in ocean science funding remain critically important to preserve marine resources."
Find details on Targets and Indicators here.