Ha Long Bay, Vietnam

The Ha Long Bay site in Vietnam was inscribed on the World Heritage List in 1994. The site's 1,600 islands and islets form a spectacular seascape of limestone pillars surrounded by species-rich waters, including a tremendous diversity of marine algae and over a thousand varieties of fish.

Today, over 40 World Heritage sites are listed for their marine values. Together, they can be considered the "Crown Jewels of our Ocean" and are recognized for their outstanding beauty, exceptional biodiversity, or unique ecological, biological, or geological processes. Learn more about this and other marine World Heritage sites.