Countries across the world will observe World Oceans Day on Tuesday. This year's theme, "The Ocean: Life and Livelihoods," highlights the importance of oceans for the life and activities of the global community.

In China, this year's World Oceans Day will be marked with a focus on protecting marine biodiversity and raising public awareness on the harmonious coexistence between humankind and nature.

In a three-year campaign launched in December 2018, for instance, China has restored 8,891 hectares of wetlands along the Bohai Sea, the country's semi-enclosed inland sea whose coast is of global importance for many migratory bird species.

In the same period, the country also finished the improvement of 132 km of coastline of the Bohai Sea. As of last year, up to 82.3 percent of the nearshore waters in the sea have been of good quality, according to environmental authorities.