Blue economy in Southeast Asia is at risk as environmental degradation, climate change, and a widening investment gap threaten one of the world’s fastest-growing economic regions, according to a new report by the Organisation for Economic Co-operation and Development (OECD). Southeast Asia became the world’s fourth-largest economic bloc in 2024, with its ocean-based industries, including fisheries, aquaculture, shipping, tourism, and marine conservation, playing a critical role in economic growth and employment. However, the OECD’s report, Financing Southeast Asia’s Blue Economy, warns that the region faces a financing gap of nearly $2.1 trillion by 2030, while only 34% of ocean-related Official Development Assistance (ODA) between 2010 and 2023 supported sustainable ocean economy initiatives.

Without urgent investment and stronger conservation measures, both marine ecosystems and millions of livelihoods could face increasing risks.

Marine Ecosystems Under Growing Pressure

The report highlights that Southeast Asia’s blue economy supports millions of people across Brunei, Cambodia, Indonesia, Lao PDR, Malaysia, Myanmar, the Philippines, Singapore, Thailand, Timor-Leste, and Vietnam.

However, overfishing, habitat destruction, and marine pollution are steadily degrading coastal and ocean ecosystems. These environmental pressures are reducing fish stocks, weakening aquaculture, affecting marine tourism, and diminishing the natural coastal barriers that protect ports and communities from storms and erosion.

Climate change is accelerating these challenges through rising sea levels, stronger tropical storms, and increasing ocean temperatures, placing vital ecosystems such as mangroves, coral reefs, and seagrass beds under severe stress.

Also Read: Nearly 200 Companies Back Trump’s Data Center Cost Protection Initiative

Investment Gap Threatens Sustainable Growth

The OECD notes that the blue economy in Southeast Asia is at risk not only as an environmental issue but also as a financing challenge.

• Between 2010 and 2023, only about 34% of ocean-related ODA directed towards Southeast Asia supported projects focused on sustainable ocean management.
• Most funding continued to flow into traditional marine industries rather than initiatives aimed at ecosystem restoration, climate resilience, or sustainable resource management.
• The report estimates that the region will require nearly $2.1 trillion by 2030 to achieve sustainable ocean management while supporting economic development and adapting to climate change.

Private investment also remains limited.

• At its highest level, only $128.4 million in private finance ODA was mobilised for ocean and coastal projects, with investments concentrated in only a few countries and sectors.

Also Read: China Builds World’s Largest 582-Tonne Magnet To Power Artificial Sun Reactor

OECD Recommends Innovative Financing

To bridge the enormous funding gap, the OECD recommends expanding blended finance, which combines public and private investment to reduce financial risks for investors.

The report also highlights several innovative financing mechanisms, including:

• Blue bonds
• Debt-for-nature swaps
• Blue carbon markets
• Sustainability-linked loans
• Guarantee mechanisms
• Parametric insurance

However, researchers stress that these financial tools will only succeed if countries strengthen governance, improve policy frameworks, and build institutional capacity.

Also Read: Teenagers Have The Most Climate-Warming Diets Of Any Age Group, New Study Finds

Key Findings

The OECD concludes that Southeast Asia’s oceans remain one of the region’s greatest economic assets, but protecting them will require much greater financial commitment. Expanding investment in sustainable marine industries, restoring coastal ecosystems, and adopting innovative financing mechanisms will be essential to ensuring long-term economic growth, climate resilience, and the livelihoods of millions who depend on the region’s blue economy.

Also Read: Germany Surpasses Fossil Fuels with Wind and Solar Energy Production