At least 18 million people living in poverty across the Indo-Pacific region fish in seagrass meadows for their daily survival, according to a large-scale study led by scientists from the conservation organisation Project Seagrass and Swansea University, and published in the journal Nature Sustainability. The research reveals that approximately 6.5 million of these individuals rely entirely on the underwater habitats for food and fishing-related income, establishing that seagrass loss functions as a direct threat to regional food security and livelihoods rather than a purely environmental concern.
The Hidden Safety Net of Indo-Pacific Coastal Communities
Seagrasses are flowering plants that form extensive underwater meadows along shallow coastlines across the globe. While tropical forests and coral reefs typically dominate international conservation discussions, shallow seagrass habitats support accessible fisheries that fishers can reach on foot or with minimal equipment. According to the research findings, these meadows provide an indispensable food source and financial safety net for households with virtually no alternative resources. Women and marginalized groups frequently play central roles in harvesting from these productive coastal ecosystems.
Did you know? Seagrass-dependent households earn around 23% less than other fishers in the region. This stark income gap highlights a persistent coastal poverty trap, where vulnerable families remain locked into low-income livelihoods tied directly to deteriorating marine habitats.
Shifting Perspectives from Conservation to Global Development
According to Dr Benjamin Jones, chief conservation officer at Project Seagrass and a lead researcher on the study, the findings fundamentally alter how the international community must view these underwater habitats. “These aren’t just meadows for fish, for turtles or carbon. They’re hidden safety nets for millions of people,” Dr Jones stated, adding that the disappearance of seagrass strips away food, income, and security from populations least responsible for environmental decline and least equipped to adapt.
Complementing this perspective, Dr Richard Unsworth, associate professor of biosciences at Swansea University and chief scientific officer at Project Seagrass, noted that global institutions have historically treated seagrass degradation as a niche ecological problem. “This study shows that it is also a development and food-security issue,” Dr Unsworth stated, emphasizing that governments and international donors cannot effectively address coastal poverty while ignoring the ecosystems sustaining it.
Policy Integration and Future Pressures
Project Seagrass Chief Executive Officer Dr Leanne Cullen-Unsworth pointed out that field observations spanning more than two decades in places like Indonesia first indicated heavy reliance on these meadows, but the new study measures the true scale of that dependence for the first time. Researchers argue that seagrass conservation must be integrated directly into international sustainable development policies and poverty alleviation strategies, specifically to support United Nations targets on ending poverty and hunger.
Without deliberate policy intervention, those human dependencies are projected to intensify. Expanding coastal development, land-based pollution, and climate change continue to degrade meadows throughout the Indo-Pacific. Local communities most reliant on the habitats frequently possess little influence over the large-scale decisions driving their environmental decline.
Frequently Asked Questions
What are seagrass meadows?
Seagrasses are flowering marine plants that form dense underwater meadows along shallow coastlines, providing critical habitat for fish, stabilizing shorelines, and supporting local fisheries.
Why are seagrass meadows considered a poverty trap?
According to the study published in Nature Sustainability, households entirely dependent on seagrass fisheries earn roughly 23% less than other fishers, leaving families with few alternatives locked into low-income livelihoods tied to vulnerable ecosystems.
How many people depend on seagrass for survival?
At least 18 million people living in poverty across the Indo-Pacific fish in seagrass meadows, with approximately 6.5 million completely dependent on the habitat for daily subsistence and fishing income.
Join the conversation: How can local governments better balance coastal development with the protection of vital subsistence fisheries? Share your thoughts in the comments below, or subscribe to our newsletter for ongoing updates on global marine conservation and coastal community resilience.
Related reading