East Asia

Countries included

China, Hong Kong, Taiwan, Japan, South Korea, Brunei Darussalam, Cambodia, Indonesia, Malaysia, Myanmar, Philippines, Singapore, Thailand and Vietnam.


Marie Touchon
GCRMN point of contact

Regional Context

Importance of coral reefs

The region supports the largest area of coral reefs of all the GCRMN regions, accounting for over 30% (78,272 km2) of the world’s total. The region is also home to two of the world’s largest archipelagic states—Indonesia with more than 17,000 islands and the Philippines with over 7,000 islands.

Overlapping with the Coral Triangle, an area recognized as the global epicentre of marine biodiversity, the EAS region boasts the world’s greatest diversity of reef-building corals with nearly 600 species, six of the world’s seven marine turtle species and more than 2,000 reef fish species. It also includes some of the most important spawning grounds for commercially important tuna species, supporting the largest tuna fisheries in the world.

Keys numbers


Total area of coral reefs (km2)


Proportion of the world’s coral reefs


Countries with coral reefs


Marine Ecoregions of the World (MEOW) (i)

(i) Marine Ecoregions of the World (MEOW) is a biogeographic classification of the world’s coasts and shelves (Spalding et al., 2007).

Key figures from the 2020 report

Hard coral cover

Algae cover


Francesco Ungaro | Unsplash
Francesco Ungaro | Unsplash


Regional reports and guidelines from East Asia.