Can seagrass restore coastal futures and coastal economies?
Across the tropical waters of the Western Indian Ocean, vast underwater landscapes quietly sustain the life of coastal communities. Seagrass meadows, often overshadowed by coral reefs and mangroves in public attention, are now emerging as one of the most effective nature-based solutions for tackling climate change, protecting biodiversity and strengthening coastal livelihoods.
In Tanzania, these ecosystems play a particularly important role. Coastal and marine habitats support around 15 million people, many of whom depend directly on fisheries, small-scale trade, tourism and marine resources for their daily income. According to recent initiatives supported by UNDP Tanzania, safeguarding coastal ecosystems is becoming central to advancing a sustainable blue economy while strengthening climate resilience across communities exposed to increasing environmental pressures.
Yet these ecosystems remain under growing threat.
Rapid urbanisation, tourism expansion, coastal development, pollution, destructive fishing practices and climate-driven changes in ocean conditions are placing increasing pressure on seagrass meadows along the Tanzanian coast. Research across several Western Indian Ocean sites shows that when these habitats degrade, the impacts are immediate and tangible: declining fish stocks, increased coastal erosion and fewer economic opportunities for coastal populations.
This is precisely where nature-based solutions (NbS) are gaining momentum.
Defined as actions that protect, sustainably manage and restore ecosystems while addressing societal challenges, nature-based solutions aim to generate benefits for both biodiversity and human well-being. In coastal environments, restoring seagrass ecosystems can simultaneously enhance fisheries productivity, stabilise sediments, reduce erosion and capture carbon through blue carbon processes.
But the real transformation lies not only in ecological restoration. It lies in the role of communities themselves.
Across Tanzania and neighbouring countries, restoration initiatives are increasingly linked to community participation, local stewardship and alternative livelihood opportunities. When coastal communities become directly involved in conservation and restoration activities, ecosystems are not only protected. They also become part of a local economic system capable of generating value, resilience and new opportunities.
We asked Jacqueline Mtengule to share her experience from the Tanzanian coast and explain how seagrass conservation can move from scientific knowledge to real community action.
What is the first step toward protecting and restoring seagrass ecosystems in coastal communities?
The shift toward protecting and restoring seagrass ecosystems on the ground begins with awareness and collective responsibility within coastal communities. In places like Tanga, many people rely on the ocean for fishing and daily livelihoods, yet seagrass meadows are often overlooked compared to mangroves and coral reefs. For meaningful change, everyone in the community from fishers and youth to women’s groups and local leaders must understand their role in protecting these ecosystems. Education and knowledge sharing are therefore the first step, helping communities see that seagrass meadows provide nursery grounds for fish, support marine biodiversity, stabilize sediments, and contribute to climate resilience through carbon storage. When communities understand these benefits, they begin to recognize that conserving seagrass is directly connected to their own food security, income, and overall well-being.
From awareness, the shift moves into practical action. Communities start monitoring seagrass beds, identifying degraded sites, and participating in restoration activities such as replanting seagrass or reducing harmful practices like destructive fishing and careless boat anchoring. In Tanga, for example, some community-led initiatives already involve local fishers and village groups working alongside researchers and conservation organizations to restore degraded seagrass areas and raise awareness of their ecological and economic importance.
How can seagrass conservation move from scientific knowledge to community practice?
Scientific knowledge about seagrass is essential, but it only becomes meaningful when communities apply it in their daily lives. In Tanga, many people depend on the ocean for fishing, yet seagrass meadows are often overlooked. To bring knowledge into practice, simple and clear information is shared with local fishers, youth, and women’s groups, explaining why seagrass matters for fisheries, biodiversity, coastal protection, and even climate resilience through carbon storage. Through conversations, training, and community meetings, people begin to see that protecting seagrass is directly linked to their own livelihoods, food security, and well-being.
Once communities understand, they can take action. Local fishers can monitor seagrass beds, reduce destructive fishing practices, and participate in restoration activities like replanting seagrass in degraded areas. In Tanga, some villages are already working alongside researchers and conservation organizations to do this. As healthier seagrass supports more fish, stabilizes sediments, and strengthens local economies, communities take pride in protecting their environment.
What initiatives are currently helping to restore and protect seagrass ecosystems along the Tanzanian coast?
Along the Tanzanian coast, seagrass restoration and protection are increasingly supported through community engagement and scientific research. In areas like Tanga, Zanzibar, and Mafia, organizations such as IUCN, Blue Ventures, and Blue Carbon Tanzania are working with local communities to monitor seagrass beds, identify degraded areas, and protect sensitive habitats from destructive fishing practices and boat anchoring. Awareness and training programs help fishers, youth, and women’s groups understand the ecological and economic importance of seagrass meadows.
Beyond active restoration, protective measures are helping communities support natural recovery. Sustainable fishing practices, community-managed marine areas, and linking restoration to local livelihoods are allowing communities to see tangible benefits from healthier seagrass ecosystems, such as increased fish catches, opportunities for eco-tourism, and improved coastal resilience.
How are fishers, women and young people becoming active participants in these initiatives?
Along the Tanzanian coast, coastal communities are increasingly becoming active stewards of their marine ecosystems rather than passive beneficiaries of conservation efforts. In Tanga’s Moa village, for example, a community-driven seagrass restoration initiative led by the International Union for Conservation of Nature (IUCN) in partnership with the University of Dar es Salaam has involved fishers, women, youth and Village Beach Management Unit (BMU) members from the very beginning from site assessments and training to planting seagrass and monitoring its growth. Community members received education on why seagrass matters for fisheries, coastal protection, and local livelihoods, and they now continue monitoring seagrass recovery even in the absence of external project staff, demonstrating local ownership and sustained involvement.
Beyond seagrass planting, other initiatives are deliberately empowering women and youth to lead change. The Empowering Female Fish Workers project in Tanga and Coast Regions trains female fish workers in marine biodiversity conservation, mentoring them to mobilize community leaders, organize patrols and carry out peer-to-peer education on sustainable practices. These women are taking on leadership roles in monitoring marine biodiversity and developing action plans to influence village decisions about coastal resource use.
The economic dimension is equally important. Nature-based solutions often generate environmental benefits, but their long-term sustainability depends on viable financing mechanisms. In several coastal regions, restoration projects are increasingly linked to eco-tourism, sustainable fisheries initiatives, blue carbon programmes and community-based conservation models capable of generating income streams while maintaining ecosystem health.
A key question: can restoring seagrass ecosystems also restore local economies?
Yes, I believe restoring seagrass ecosystems can also help restore local economies, especially in coastal communities where many people depend directly on marine resources. In many coastal areas of Tanzania, fishing is a primary source of food and income. Seagrass meadows serve as important nursery habitats for many fish and marine species, so when these ecosystems are healthy, they support the reproduction and growth of fish populations. By restoring and protecting seagrass habitats, we are also helping to sustain fisheries that coastal communities rely on for their livelihoods.
Beyond fisheries, healthy seagrass ecosystems can also create new opportunities for local communities, especially for young people and women. Restoration initiatives often involve community monitoring, conservation activities, and environmental education, which can strengthen local skills and participation in the blue economy. In some areas, healthier coastal ecosystems can also support eco-tourism and other nature-based livelihood opportunities. In this way, restoring seagrass is not only about protecting biodiversity but also about strengthening local economies and building long-term resilience for coastal communities.
Seagrass restoration can play a very important role in building a regenerative blue economy because healthy marine ecosystems are the foundation of sustainable livelihoods in coastal communities. In many coastal areas of Tanzania, people depend heavily on fishing and other ocean-based activities for their daily income and food security. Seagrass meadows act as nursery grounds for many fish and marine species, meaning that when these ecosystems are protected and restored, they help support the recovery of fish populations. This directly benefits local fishers and strengthens the sustainability of coastal fisheries.
At the same time, restoring seagrass ecosystems creates opportunities for communities to participate in conservation while benefiting from new economic activities. Community-led restoration, monitoring, and awareness initiatives can involve fishers, women, and youth, giving them a role in managing and protecting their marine resources.
The challenge is also closely connected to climate change. The Western Indian ocean is experiencing rising ocean temperatures, changing weather patterns and increasing coastal erosion risks. Seagrass meadows, through their capacity to stabilise sediments and absorb wave energy, can play a crucial role in strengthening natural coastal defences. Yet scaling up these solutions requires strong collaboration between science, communities and institutions.
What lessons can be drawn from current initiatives in Tanzania?
One of the most important lessons emerging from current coastal ecosystem initiatives in Tanzania is that community ownership is essential for long-term success. Many restoration efforts have shown that conservation becomes more effective when fishers, women, and young people are actively involved in monitoring ecosystems, participating in restoration activities, and raising awareness within their communities. Initiatives such as the ReSea Project (Regeneration of the Seascape) reflect this approach by promoting ecosystem restoration that is closely connected with local participation.
Another important lesson is that ecosystem restoration must be linked with livelihood opportunities and long-term economic resilience. When restoration efforts contribute to healthier fisheries, improved coastal resilience, and potential nature-based livelihoods such as eco-tourism or community-led conservation activities, communities become more motivated to protect these ecosystems.
And what types of partnerships and financing models are necessary to maintain restoration projects over the long term?
From my perspective, maintaining restoration projects over the long term requires strong partnerships between governments, local communities, research institutions, NGOs, and the private sector. Coastal ecosystem restoration is complex, and no single actor can do it alone. Governments can provide supportive policies and coordination, while research institutions contribute scientific knowledge and monitoring. At the same time, organizations working in conservation often help facilitate restoration activities and community training. However, the most important partners are the coastal communities themselves. Fishers, women, and young people are the ones interacting with these ecosystems every day, so their participation and local knowledge are essential for ensuring that restoration efforts continue beyond the lifespan of specific projects.
In terms of financing, long-term sustainability requires moving beyond short-term project funding toward more diverse and stable financing models. Many current initiatives highlight the importance of combining public funding, international development support, and community-based economic activities linked to the blue economy. For example, restoration efforts can be supported through climate and blue-carbon initiatives, conservation funds, or partnerships with sustainable tourism and fisheries sectors that benefit from healthy marine ecosystems. When restoration is connected to local livelihoods and supported by multiple funding sources, it becomes easier to sustain these efforts over time while ensuring that both ecosystems and coastal communities continue to benefit.
A final thought
In the end, the question posed at the beginning of this conversation finds a clear answer. Seagrass ecosystems can indeed help restore coastal futures and local economies, but only if protection becomes a shared responsibility among all those who interact with these fragile habitats.
Seagrass meadows are among the most productive and valuable coastal ecosystems, yet they are also among the easiest to damage. A careless anchor, the propeller of a jet ski digging into the seabed, or unsustainable fishing practices can destroy in minutes what nature has taken years to build. Once degraded, restoring even a single square metre of seagrass meadow requires time, resources and long-term commitment.
For this reason, nature-based solutions such as seagrass restoration must also transform the mindset of everyone using coastal environments. Fishers, tourism operators, recreational boaters and coastal communities all play a role in protecting these ecosystems. Without this collective awareness, restoration efforts risk becoming a continuous cycle of damage and repair.
At the same time, protecting seagrass ecosystems opens the door to new sustainable opportunities. Scientific tourism, educational field activities such as snorkelling-based learning programmes, and community-led conservation initiatives can create new forms of coastal tourism that value ecosystems rather than exploit them. Low-impact productive activities, including oyster farming, seaweed cultivation and sea cucumber aquaculture, can further strengthen local economies while maintaining ecological balance.
In this sense, seagrass restoration is not only about protecting an underwater habitat. It is about rethinking how coastal societies interact with the sea, transforming fragile ecosystems into foundations for resilient communities and sustainable blue economies.
Can seagrass restore coastal futures and coastal economies?
