In his video address, H.S.H Prince Albert II of Monaco discusses the global recognition that sustainable development depends upon healthy and productive oceans, seas and coastal areas. These marine ecosystems are imperiled by several stress factors and the resulting changes are impacting hundreds of millions people in the most vulnerable regions of the world. Prince Albert also describes Monaco's half-century long support for the IAEA Environmental Laboratory, as well as Monaco's engagement in promoting sustainable development and environmental stewardship.