Interactive Map Brings Insight into Malaysia’s Coral Reef Health

KUALA LUMPUR, 22 SEPTEMBER 2025 – An advanced interactive map compiling years of data on the health of Malaysia’s reefs from over 300 sites is now available on Reef Check Malaysia’s website.
The interactive map offers a comprehensive and dynamic view of reef conditions, specifically using data from the Reef Check survey methodology, which is widely recognized worldwide.
It provides a robust platform that visualizes data, displaying key indicators such as fish, invertebrates, and substrate data. The platform presents this information in an easy-to-understand format, helping users quickly identify areas of concern and track trends in reef health in Malaysia over the past five years.
The interactive map displays data on the health of Malaysia’s coral reefs.
The new platform was made possible through The APAC Digital Transformation Program by Infoxchange.
“This platform leverages the power of community involvement to gather extensive and diverse data sets. This approach democratizes data collection and encourages public participation, fostering a sense of ownership and responsibility towards reef conservation,” commented Theresa Ng, Chief Operating Officer of Reef Check Malaysia.
“The interactive map also provides timely updates on reef health indicators. This immediate access to current data allows stakeholders to make informed decisions quickly, enhancing the ability to respond to emerging threats,” Ng added.
The data was gathered using the Reef Check survey methodology
The platform is designed with an intuitive user interface and is accessible via Reef Check Malaysia’s website. This ensures that users of all technical backgrounds can easily navigate the map, and access relevant information.
Alongside the interactive map, Reef Check Malaysia has also introduced an educational modules page, designed for teachers, students, and passionate individuals to learn more about marine conservation.
“We invite everyone to explore the map and educational modules,” added Ng. “We hope this platform and modules will help facilitate informed decision-making, promote sustainable practices, and ultimately contribute to the preservation and restoration of coral reefs, safeguarding these vital ecosystems for future generations.”
For more information on Reef Check Malaysia, you may visit them on their website, Facebook and Instagram or contact them at hello@reefcheck.org.my.    

Reef Check Malaysia has published its 2020 report on the status and health of coral reefs around Malaysia. The report concludes that, while overall coral reef health is reported to be in fair condition, some areas are showing signs of decline that need to be addressed. The surveys are a continuation of a National Reef Check Survey Programme that has now run for 14 years.

Kuala Lumpur (19 April 2021)

A total of 210 sites across Malaysia were surveyed in 2020. The results indicate that the average live coral cover, a key health indicator, is 41.3%, receiving a “fair” rating. This is a slight increase on 2019 (40.63%), reversing a slow decline that has been observed for 5 years. However, the average masks a wide range, and many sites recorded indicators of disturbance. Pollution, Crown of Thorns (COT – a coral eating starfish), fish bombing and tourism impacts appear to be the greatest threats facing coral reefs in Malaysia.

Coral reefs are valuable, economically and biologically. Lau Chai Ming, manager of the survey programme and co-author of the report, explains:

“Coral reefs are a source of both food and jobs for coastal communities. Islands like Tioman and Perhentian rely on reefs for tourism, which is the mainstay of the economy. Not only that, but they are important biologically, providing a habitat and breeding ground for a third of marine species. Put simply – no reefs, no fish. On a broader scale, they can connect ecosystems over large areas. Tioman, for example, is part of a reef system that has been identified by scientists as among the 50 most important reefs in the world – reef areas that we simply can’t afford to lose. It’s that important.”

The report calls for stronger local management, with the participation of local stakeholders, to ensure their interests are taken into account. Julian Hyde, General Manager of Reef Check Malaysia, said: “The results for the whole of Malaysia suggest little change on previous years. But this highlights the importance of looking at the data site by site. There is a wide range in Live Coral Cover (LCC), for example – from over 80% to just 5%. So it is clear that some sites are very healthy, while others are heavily impacted – even though they can be quite close to each other. This supports the argument for strengthening local management capacity, so that individual problem areas can receive more attention. And involving local stakeholders can increase buy-in to management objectives and programmes.”

The report also notes the importance of incorporating resilience concepts into reef management. Resilience describes the ability of an ecosystem to recover from external shocks – such as those that are expected as climate change impacts grow. Hyde says:

“There are actually some very simple, low cost measures that can be taken to improve reef health. Making sure waste is well-managed, supervising divers and snorkelling operations to reduce physical impacts to reefs, improving sewage treatment to reduce pollution – some of these measures can be implemented quickly and cheaply and can improve reef health in the short term.

So it’s not the end of the world – but we do have to take action now. We are living in an era where there is increasing concern about biodiversity conservation. We can all help to conserve Malaysia’s marine biodiversity.”

The report also notes the importance of incorporating resilience concepts into reef management. Resilience describes the ability of an ecosystem to recover from external shocks – such as those that are expected as climate change impacts grow. Hyde says: “There are actually some very simple, low cost measures that can be taken to improve reef health. Making sure waste is well-managed, supervising divers and snorkelling operations to reduce physical impacts to reefs, improving sewage treatment to reduce pollution – some of these measures can be implemented quickly and cheaply and can improve reef health in the short term. So it’s not the end of the world – but we do have to take action now. We are living in an era where there is increasing concern about biodiversity conservation. We can all help to conserve Malaysia’s marine biodiversity.”

The report also notes the importance of incorporating resilience concepts into reef management. Resilience describes the ability of an ecosystem to recover from external shocks – such as those that are expected as climate change impacts grow. Hyde says: “There are actually some very simple, low cost measures that can be taken to improve reef health. Making sure waste is well-managed, supervising divers and snorkelling operations to reduce physical impacts to reefs, improving sewage treatment to reduce pollution – some of these measures can be implemented quickly and cheaply and can improve reef health in the short term. So it’s not the end of the world – but we do have to take action now. We are living in an era where there is increasing concern about biodiversity conservation. We can all help to conserve Malaysia’s marine biodiversity.”

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About Reef Check Malaysia

Reef Check was established in the USA in 1996 to raise awareness on the importance of, and threats to, coral reefs. The local chapter, Reef Check Malaysia (RCM), was registered in 2007 as a non-profit company to engage with local stakeholders to protect, restore and revive coral reefs in Malaysia. Its surveys have highlighted various problems facing coral reefs in Malaysia, including overfishing, pollution and sedimentation from land-based development.

RCM also conducts education and awareness programmes for schools, organisations and local communities. It runs coral reef rehabilitation programmes that contribute towards the scientific understanding of coral reef ecology.

 Reef Check is active in 82 countries and territories throughout the world. Visit www.reefcheck.org.my for more information. The 2020 Annual Survey Report (and previous years) is available for download at https://www.reefcheck.org.my/annual-reports

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