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In Memoriam: Dr. Flower Msuya
It is with heavy hearts that we announce the passing of Dr. Flower Msuya, a founding and pivotal member of the Global Seaweed Coalition since its inception. Dr. Msuya’s work has inspired and shaped a whole generation, including the young generation of Tanzanian...
Supporting seaweeds and their myriad contributions to advancing sustainable, inclusive, science- and evidence-based solutions for the 2030 Agenda and beyond
Madagascar, Indonesia, France, UN entities & Global Seaweed Coalition announce support for the creation of a UN Global Seaweed Initiative at the 3rd United Nations Ocean Conference, Nice, France
A coalition of governments, UN entities, and partners has announced the development of a United Nations Global Seaweed Initiative (UNGSI) — a collaborative platform to promote global efforts for safe and sustainable development of the seaweed sector supported by...
La Baleine event at UNOC3: Towards a UN taskforce on seaweed
10 June 2025, 10:15 - 11:15 hrs. Palais des Expositions, Green zone, Nice, France This session details the UN Taskforce on Seaweed - an initiative bringing together partners to unlock the potential of seaweed for sustainable food systems, climate resilience, and...
Shaping a Sustainable Future for Seaweed in a Regenerative Blue Economy
June 7, 11:30am – 1:00pm, Grimaldi Forum, Monaco Seaweed holds immense potential for regenerating the blue economy, contributing to climate resilience, food security and sustainable livelihoods. This event offers a unique opportunity to highlight the untapped...
Toward the creation of a UN task force on seaweed – Raising the level of ambition for a sustainable blue economy
The Global Seaweed Coalition will host an official in person side-event in the Blue Zone during the 2025 UN Ocean Conference in Nice, France, entitled “Toward the creation of a UN task force on seaweed – Raising the level of ambition for a sustainable blue economy” ...
Unlocking the Potential of Europe’s Seaweed and Bivalve Industries
Seaweed and bivalve aquaculture hold immense promise for restoring ocean health, mitigating climate change, and strengthening coastal economies. Market forecasts point to double-digit growth over the next decades. Yet, despite increasing investment and...
In Memoriam: Professor Thierry Chopin
Tribute to Professor Thierry Chopin, by Dr. Philippe Potin, scientific director of the Global Seaweed Coalition. Throughout his career, Thierry was known for his enthusiasm, charisma, and sense of humor, leaving a lasting impact on the scientific community and...
Congratulations to our 2024 Grantees!
After a highly competitive evaluation process undertaken by the GSC Scientific and Strategic Advisory Councils, the Global Seaweed Coalition Leadership Committee gathering our founding partners from UN Global Compact, CNRS and Lloyds Register Foundation made the final...
The Global Seaweed Coalition will be visiting Japan in April
The Global Seaweed Coalition will be visiting Japan in April! Our local partners from UN Global Compact Japan are working on organizing a great seaweed conference at the Sasakawa Peace Foundation in Tokyo (April 26th, 2pm) in partnership with the French Embassy &...
On Ubuntoo
Seaweed May Be ‘the World’s Greatest Untapped Resource’ | The Pew Charitable Trusts
Seaweed could represent the world’s most significant untapped resource, according to Vincent Doumeizel, a United Nations adviser and prominent advocate for large-scale seaweed cultivation. In an interview published by Pew Research Center, Doumeizel outlined the environmental and economic promise of expanding seaweed farming, particularly in regions such as Alaska.
Doumeizel argues that seaweed can help address multiple global crises simultaneously, including climate change, environmental degradation, food insecurity, and social inequality. Seaweed grows rapidly without the need for freshwater, fertilizers, or arable land, making it a low-impact crop compared with many terrestrial agricultural products. It also absorbs carbon dioxide and excess nutrients from the water, helping to mitigate ocean acidification and reduce pollution.
Beyond environmental benefits, seaweed has significant economic potential. It can be used in a wide array of products, including food, animal feed, fertilizers, bioplastics, textiles, and biofuels. Doumeizel emphasized that scaling up seaweed cultivation could create jobs in coastal communities while supporting more sustainable industrial practices. He pointed to Alaska as an example of a region well positioned to expand seaweed farming due to its extensive coastline and cold, nutrient-rich waters.
Seaweed is already a dietary staple in many parts of the world, and interest in its nutritional benefits is growing elsewhere. It is rich in vitamins, minerals, and protein, and could play a role in improving global food security. Additionally, incorporating seaweed into animal feed has been shown to reduce methane emissions from livestock, offering another potential climate benefit.
Doumeizel, who authored a 2023 book describing seaweed as “the world’s greatest untapped resource,” believes that broader awareness and investment are needed to unlock its full potential. He advocates for coordinated international efforts to develop sustainable seaweed industries, emphasizing that careful management will be essential to avoid ecological harm as production expands.
While challenges remain, including regulatory hurdles and the need for further research, Doumeizel maintains that seaweed offers a rare opportunity: a scalable solution that can simultaneously support environmental restoration, economic development, and global food systems.
Source : Pew
Adding seaweed to cement could forever change construction - Earth.com
Researchers report that seaweed may become an innovative ingredient in concrete, offering a way to significantly reduce carbon emissions from the construction sector. According to findings highlighted by Earth.com, powdered seaweed can replace a portion of traditional cement while also storing additional carbon as the material hardens.
The buildings and construction sector accounts for roughly one-third of global CO2 emissions, making low-carbon concrete one of the most impactful opportunities for reducing industrial pollution. Cement production is particularly carbon-intensive, so replacing even a fraction of it with alternative materials could yield meaningful climate benefits.
In the study, researchers at the University of Washington developed a low-carbon cement alternative using powdered seaweed. When blended into cement, the seaweed reduced the material’s global warming potential by 21% while maintaining performance standards. The researchers suggest that seaweed could potentially replace up to 30% of cement in certain applications, offering both emissions reductions and long-term carbon storage.
As the concrete cures and hardens, the seaweed-based component helps lock away carbon, contributing to a lower overall carbon footprint for the finished material. This dual benefit—reducing emissions from cement production and storing carbon within the concrete—positions seaweed-infused cement as a promising strategy for decarbonizing construction.
The researchers describe the approach as a surprising solution to one of the construction industry’s biggest climate challenges. With concrete being the world’s most widely used building material, integrating seaweed into cement formulations could reshape industry practices while helping meet global climate targets.
If adopted at scale, seaweed-enhanced concrete could represent a significant step toward lowering emissions across infrastructure and building projects worldwide. The study underscores the potential for nature-based materials to play a central role in transforming heavy industries and reducing their environmental impact.
Source : Earth.com
Maine Researchers Break Down the Hidden Cost Drivers of Seaweed Farming to Improve Profitability
Seaweed farming for food, beauty products, fertilizers and other uses has rapidly gained momentum in the western hemisphere. However, as the industry has matured and realistic market values have emerged, economic challenges have slowed growth. Increasingly, new growers have been struggling to build stable, long-term business plans.
Source : Global Seafood Alliance
Study: Finds Direct Nutrient Transfer from Salmon to Kelp in Bantry Bay Trial
Atlantic salmon farmed alongside sugar kelp in Bantry Bay transferred measurable nutrients to the seaweed crop in a commercial-scale integrated multi-trophic aquaculture (IMTA) system, according to a new peer-reviewed study published in Scientific Reports.
Source : Salmon Business
Green Light for Regenerative Sea Farm Expansion Follows Biostimulant Breakthrough
Welsh seaweed and shellfish farmers have been given the go-ahead to expand two sea farms, a decision which will create jobs and increase production of a regeneratively-grown, trial-proven seaweed alternative to chemical fertiliser.
Source : Business News Wales
Uluu Secures $2.1m to Scale Seaweed Packaging
Perth-based materials company Uluu is set to scale production of its seaweed-based alternative to plastic packaging after securing $2.1 million through the Australian Government’s Industry Growth Program.
Source : PKN Packaging News
Seaweed Compound Shows Major Methane Cuts in Beef Cattle
Adelaide University researchers have demonstrated that a naturally derived seaweed compound can dramatically reduce methane emissions from beef cattle raised in extensive grazing systems, without harming calves.
Source : Adelaide University
Zeefier: Creating Natural Dyes from Local Seaweed - Oceans and Fisheries
Founded in the Netherlands, Zeefier is an innovative company developing textile dyes made from seaweed. By replacing petrol‑based chemistry with a renewable ocean resource, Zeefier offers an alternative that enables textiles to remain biodegradable. Zeefier is expanding its solution for dye houses worldwide with help from the EU's BlueInvest program.
Source : Oceans and fisheries
Alaska Mariculture Gets a Big Kickstart
Alaska plans to grow its mariculture industry with a focus on oysters and seaweed, but there are obstacles to overcome. While oyster farming is responsible for $1.6 million of mariculture revenue in Alaska, more than three-quarters of the $2 million total, the focus of a Pacific Marine Expo mariculture panel hosted by Dan Lesh, deputy director of the Southeast Conference (SEC), was solidly on seaweed. “We want to go from $2 million to $200 million in mariculture sales,” says Lesh.
Source : National Fisherman









