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Unlocking Efficiency: The Benefits of Onshore Seaweed Cultivation



As the seaweed industry gains increasing prominence for its environmental credentials and economic potential, it’s perhaps ironic that land-based cultivation is proving more efficient than the traditional offshore methods.

Over recent times, investors, governments and organisations globally have recognised the significant potential and need to invest in and build the seaweed (Asparagopsis) cultivation industry, to help address climate change and build a more sustainable agricultural sector.

Understandably, cultivation techniques within the fledging industry have historically been rooted in ocean farming. However, recent developments have challenged these long-standing practices, indicating a shift towards more efficient and sustainable land-based methods.

Fremantle-based SeaStock, believes its onshore cultivation method for Asparagopsis may be an impressive four times more efficient than offshore techniques, and with the potential to scale operations more readily to commercial levels, without the variables of an ocean environment.

This greater efficiency arises from the precise control over environmental conditions, guaranteeing optimal growth rates, reduced risk of disease and contamination and, ultimately, consistent production of higher-quality seaweed.

Onshore cultivation techniques are less labour-intensive, with lower capital expenditure, and can also produce multiple side-stream products from the same seaweed feedstock. This includes the extraction of high-yielding natural pigments and the utilisation of residue biomass for industrial applications, maximising the value derived from each cultivation cycle.

SeaStock Managing Director and Co-Founder, Tom Puddy, explained that one of the most compelling aspects of his Company’s land-based cultivation method is its ability to be replicated globally.

“That’s the point that gets investors, the scientists and other interested stakeholders most excited.

“We use natural ocean water, renewable energy and other industry waste materials, such as CO2, to enhance biomass growth, which opens up the possibility to generate meaningful levels of carbon credits.

“Land-based seaweed cultivation aligns with the principles of a true circular economy, turning waste into sought-after resources and significantly reducing environmental impact. This approach not only addresses the growing demand for seaweed but does so in a manner that is ecologically responsible and economically sustainable.”

The SeaStock team believes that its production and extraction intellectual property (IP) could be applied to future algae species that also have highly valued natural compounds, such as bioactive compounds, healthy pigments and basic protein for large scale human nourishment.


Research Scientist

Dr Sanjana Senthilkumar is a Ph.D. graduate of Philosophy in Biosciences and Bioengineering, from the Indian Institute of Technology Guwahati, and holds a Bachelor of Technology in biochemistry from Sathyabama University, in India. During this time Sanjana gained vast research knowledge on plant secondary metabolites and their physiochemical properties. Her nearly decade-long experience spans across plant tissue culture, natural product chemistry, photo-physics, and various analytical techniques. She possesses skill in experimental design, research review, execution, data analysis, and scientific writing. She has led and executed a research entrepreneurship project, which involved design, development, and patenting of an innovative apparatus for use in chemistry laboratories. Additionally, she has undertaken several roles as a trainer, teaching assistant, supervisor, instrument operator, and laboratory demonstrator. Sanjana has been appointed to the position of Research Scientist to support the next phase of the Company’s commercial growth. Tasked specifically with helping establish a scientific approach to developing sustainable and commercially viable biomass growth of macro algae.


Production Technician

In 2023 Zoe completed a Bachelors in Coastal and Marine Science at Curtin University. During her study Zoe also gained work experience as an aquaculture volunteer, including roles with PhD students and Department Primary Industry Resource Development (DPIRD).  In addition Zoe worked at the Geraldton TAFE commercial hatchery, which introduced her knowledge to cultivate Asparagopsis seaweed and aquaculture operations.
Within completing Zoe's degree, she also completed field work studies on fish behaviours and interacted with multiple marine based professionals.  Zoe had access to innovative technology that made her learning & experiences much more immersive and accessible, enabling her to gain experience in technologies, equipment and platforms used within the aquaculture research industry.  Zoe is thrilled to be a part of the Seastock science team, which has further ignited her passion for the ocean and participating in work which will benefit the state of our climate. Working towards a more positive future for all.