Australia’s Untapped Potential in Sustainable Seaweed Farming
Seaweed farming is emerging as a sustainable solution for environmental and economic challenges worldwide. However, new research from Monash University and the University of the Sunshine Coast reveals that Australia has significant ground to cover before fully capitalizing on the booming global demand.
A recent study published in the Journal of Applied Phycology explores strategies to accelerate the growth of Australia’s seaweed industry. Researchers identified key improvements in farming equipment and cultivation techniques that could drive large-scale commercial viability.
Seaweed Farming: A Green Gamechanger
Lead researcher Dr. Belinda Comerford, from the Marine Evolutionary Ecology Research Group at Monash School of Biological Sciences, highlights the transformative potential of seaweed cultivation.
“Global algal aquaculture, including seaweed farming, has expanded 4.3 times over the past two decades,” Dr. Comerford stated. “Australia, with its vast coastline and suitable coastal environments, is in a prime position to harness this opportunity.”
By refining industry practices and enhancing farming technology, Australia can develop a commercially viable seaweed sector that supports net-zero targets and green economic transitions.
Efficient, Low-Impact Cultivation
Unlike traditional farming methods, seaweed can be grown in land-based tanks, where seawater and air pumps regulate its movement. This innovative approach requires minimal resources and generates lower emissions, making it a sustainable alternative to conventional Western agricultural practices.
Seaweed serves multiple industries, including food production, pharmaceuticals, construction, and renewable energy. Its versatility adds to its appeal as a high-value, eco-friendly crop.
Key Insights from the Study
Dr. Comerford and her team conducted research at Queensland’s Bribie Island Research Center, where seaweed was cultivated in 1,000-liter free-floating tanks. The study revealed that optimizing light exposure is crucial for maximizing yields.
“We discovered significant differences in light exposure patterns between naturally growing seaweed and those in our cultivation tanks,” Dr. Comerford explained. “Understanding these variations allows us to provide industry-specific recommendations to improve growth conditions.”
Findings suggest that adjusting stocking density and refining tank designs can enhance productivity. Developing specialized equipment, such as tanks that better replicate underwater light conditions, could set new industry standards and increase commercial viability.
The Future of Seaweed Farming in Australia
With global demand for seaweed rising, Australia has a unique opportunity to establish itself as a key player in this sustainable industry. By implementing research-driven improvements, seaweed farming can become a commercially profitable and environmentally beneficial sector.
For more details, refer to the original research: Belinda Comerford et al., Land-based seaweed cultivation creates darker, less predictable light environments, Journal of Applied Phycology (2025). DOI: 10.1007/s10811-025-03462-8.
Source: Monash University