Status of Coral Reefs of the World: 2025 - East Asian Seas

EMBARGOED UNTIL 27th AUGUST 2026.

Title: Status of Coral Reefs of the World: 2025 – Chapter 4 – East Asian Seas

Authors: Tadashi Kimura, Danwei Huang, Karenne Tun, Loke Ming Chou, Ray Jing Tong, Hui Huang, Jiansheng Lian, Lintao Huang, Lei Jiang, Apple Pui Yi Chui, Put Jr. Ang, Chaolun Allen Chen, Chao-Yang Kuo, Ya-Yi Huang, Takashi Nakamura, Rickdane Gomez, Lucas Yutaka Kimura, Yuko Kitano, Taihun Kim, Heung-sik Park, Frederick Chong, Leonora Yeo, Ouk Vibol, Rikoh Manogar Siringoringo, Giyanto, Muhammad Abrar, Yang Amri Affendi, Zarinah Waheed, Zau Lunn, Cleto L. Nañola, Maria Vanessa Baria-Rodriguez, Tai Chong Toh, C.S. Lionel Ng, Thamasak Yeemin, Makamas Sutthacheep, Van Long Nguyen, Minh Quang Thai, Si Tuan Vo.

Contributor Roles: CRediT statement for this chapter

Date: 27th August 2026

Institution: Global Coral Reef Monitoring Network (GCRMN), International Coral Reef Initiative (ICRI)

DOI: https://doi.org/10.59387/LFPR6347.EAS

Part of: Status of Coral Reefs of the World: 2025

Cite this chapter: Kimura, T., Huang, D., Tun, K., Chou, L. M., et al. (2026). Chapter 4 – East Asian Seas. In González-Rivero, M., et al. Status of Coral Reefs of the World: 2025. Global Coral Reef Monitoring Network (GCRMN), International Coral Reef Initiative (ICRI). https://doi.org/10.59387/LFPR6347.EAS

Copyright Information: Copyright © 2026, Global Coral Reef Monitoring Network (GCRMN) and International Coral Reef Initiative (ICRI).

Supplementary Material: https://doi.org/10.5281/zenodo.21824430

This publication may be reproduced in whole or in part and in any form for educational or non-profit services, provided acknowledgement of the source is made. No use of this publication may be made for resale or any other commercial purpose without prior permission in writing.

Author Contributions

With thanks to the co-authors of this chapter: 

Tadashi Kimura, Danwei Huang, Karenne Tun, Loke Ming Chou, Ray Jing Tong, Hui Huang, Jiansheng Lian, Lintao Huang, Lei Jiang, Apple Pui Yi Chui, Put Jr. Ang, Chaolun Allen Chen, Chao-Yang Kuo, Ya-Yi Huang, Takashi Nakamura, Rickdane Gomez, Lucas Yutaka Kimura, Yuko Kitano, Taihun Kim, Heung-sik Park, Frederick Chong, Leonora Yeo, Ouk Vibol, Rikoh Manogar Siringoringo, Giyanto, Muhammad Abrar, Yang Amri Affendi, Zarinah Waheed, Zau Lunn, Cleto L. Nañola, Maria Vanessa Baria-Rodriguez, Tai Chong Toh, C.S. Lionel Ng, Thamasak Yeemin, Makamas Sutthacheep, Van Long Nguyen, Minh Quang Thai, Si Tuan Vo.

Edited by: Manuel Gonzalez-Rivero; Thomas Dallison; Jeremy Wicquart; Amanda Brigdale; Erica K. Towle; Murray Logan; Emily K. Fobert; Francis Staub; Serge Planes.

Data Contributors

With thanks to the data contributors: 

Muhammad Abrar; Yang Amri Affendi; Abigail Alling; Put Jr. Ang; Maria Vanessa Baria-Rodriguez; Victor Brun; Anna Celis; Chaolun Allen Chen; Frederick Chong; Loke Ming Chou; Apple Pui Yi Chui; Alistair Cole; Luigi Colin; Kitty Currier; Laure de Ville d’Avray; Orla Doherty; Graham J. Edgar; Jan Freiwald; Giyanto; Rickdane Gomez; Danwei Huang; Hui Huang; Lintao Huang; Ya-Yi Huang; Lei Jiang; Taihun Kim; Lucas Yutaka Kimura; Tadashi Kimura; Yuko Kitano; Lena Kraft; Chao-Yang Kuo; Jiansheng Lian; Zau Lunn; Tom Martin; Jenny Mihaly; Carol Milner; Tamal Mondal; Takashi Nakamura; Cleto L. Nañola; C.S. Lionel Ng; Van Long Nguyen; Alex H. O’Brien; Lizzi Oh; Heung-sik Park; Chelladurai Raghunathan; Marlen Schlotheuber; Rikoh Manogar Siringoringo; Rick D. Stuart-Smith; Makamas Sutthacheep; Frédéric Tardieu; Minh Quang Thai; Tai Chong Toh; Ray Jing Tong; Karenne Tun; Ouk Vibol; Si Tuan Vo; Christian R. Voolstra; Zarinah Waheed; Thamasak Yeemin; Leonora Yeo.

Data & Code Accessibility

The GCRMN produces estimations regarding the status and trends of coral reefs using data acquired by the members of the GCRMN network. The data are collected following Data Sharing Agreements (DSA) with data contributors and as such the GCRMN is not the owner of datasets shared by its members. Therefore, for the “Status of Coral Reefs of the World: 2025” report, the GCRMN is unable to share the raw datasets. However, some members of the GCRMN network and report contributors have made their datasets publicly available. For benthic cover monitoring data, such open access datasets are listed here.

All code used to produce the results and figures presented in the “Status of Coral Reefs of the World: 2025” GCRMN report is openly available on a GitHub repository. This repository allows full reproducibility and transparency of the analyses.

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Status of Coral Reefs of the World: 2025