Wales Is Replanting Its Lost Seagrass Meadows, Seed by Seed
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📰 The quick summary: Volunteers and scientists in Wales are hand-planting millions of seagrass seeds along the coast, working to restore vital underwater meadows that support marine life, store carbon, and protect coastlines.
📈 One key stat: Up to 92% of UK seagrass meadows have been lost over the past century, making restoration efforts like this one critical for marine ecosystems and coastal protection.
💬 One key quote: “There’s not many jobs where you get to be a sea gardener,” says Dr Oliver Thomas, senior science officer at Project Seagrass.
1️⃣ The big picture: Seagrass meadows are among the most valuable ecosystems on Earth, serving as nurseries for fish, storing carbon, cleaning water, and protecting coastlines. In the UK, up to 92% of these underwater meadows have disappeared over the past century due to pollution, boat anchor damage, land reclamation, and disease. Project Seagrass, a UK charity, is now working to reverse that loss by planting millions of seeds by hand at sites across Wales and beyond, with a long-term goal of restoring 10 hectares at Anglesey alone. Volunteers of all ages, from schoolchildren to politicians, are joining scientists on the beach at low tide to inject seeds into the sand using repurposed caulking guns and a hand-pushed seeding machine. Wales has already become the first country in the world to adopt a national action plan for seagrass restoration, targeting 250 hectares recovered by 2030.
2️⃣ Why is this good news: Seagrass restoration is gaining real momentum across the UK, with successful meadows now flourishing on the Isle of Wight and in Dale, south Wales, where cuttlefish are already using them as nurseries. Each new patch of seagrass that takes hold engineers its own recovery by slowing currents and clearing the water, naturally encouraging more grass to grow nearby. Beyond supporting fish, crabs, seahorses, and countless other species, restored meadows deliver clean water, coastal protection, and carbon storage, benefits that extend far beyond the ocean floor. Community involvement, from 12-year-old volunteers to political leaders, is building a generation of people personally invested in protecting these ecosystems. With over 70 experiments conducted and growing expertise in planting techniques, scientists are steadily closing the knowledge gap that once made large-scale seagrass restoration seem out of reach.
3️⃣ What’s next: Project Seagrass continues expanding planting sites across the UK while refining techniques through ongoing experiments. Scientists are watching closely to see whether this winter’s setbacks at Anglesey recover as warmer months bring more sunlight and growth. Wales’s 2030 target of 250 hectares restored will serve as a key milestone for the country’s national seagrass action plan.
Read the full story here: The Guardian – ‘Hard work’: how to grow a meadow in the sea
