What day is World Ocean Day?

June 8th is World Ocean Day, and the theme of 212 is "Ocean and Sustainable Development". The ocean plays a key role in human daily life and is an organic part of sustainable development. However, human activities have seriously threatened the marine environment in the world. Over-exploitation, illegal fishing, destructive fishing methods, marine pollution, especially pollutants discharged from land into the sea and the invasion of alien species are destroying marine ecosystems, including corals and important fishery resources.