Ocean and coast can provide a variety of ecosystem services. "Conserve and sustainably use the oceans, seas and marine resources" has been addressed in the United Nations Sustainable Development Goals (SDGs). Challenges for the implementation of marine SDGs include how to reduce the impacts of land-based activities, strengthen integrated coastal management, improve marine resource efficiency, enhance climate change adaptation, and thus improve human well-being for coastal zone residents. To address these challenges, ocean and coasts should be integrated as a whole ecosystem and marine and coastal ecosystem-based management should be applied to take into account the cumulative impacts from multi-sectors and different stressors. Ecosystem services provided by ocean and coasts can be improved by setting up integrated marine observation system, performing reasonable marine zoning, reducing human activities based on the carrying capacity of marine environment, and ensuring reasonable allocation and use of marine resources. All these measures can move forward the implementation of marine Sustainable Development Goals (SDGs).