BSI: Natural antimicrobial coating for aquaculture – collaboration and investment opportunity

Opportunity for:

• Fisheries and aquaculture companies seeking sustainable biofouling solutions
• Industry exploring innovative coatings and marine applications to partner
• Investors interested in supporting the spin-out of a novel agrifood technology

Industry challenge
Marine biofouling is a major challenge for aquaculture, particularly in Australia and New Zealand where the use of harsh chemicals such as copper coatings is limited. Current physical cleaning methods damage stock, increase disease risk, reduce yields, and impact profitability, with farms spending millions annually on cleaning costs. 

For instance, New Zealand King Salmon has recently reported financial challenges resulting from fish mortality events, which may, in part, be attributable to the effects of biofouling on fish health and development. There is an urgent need for more sustainable and efficient solutions to improve stock health, decrease operational expenditures, and support positive environmental outcomes.

Current opportunity
The Bioeconomy Science Institute New Zealand (BSI) has developed a natural, flexible antimicrobial coating that reduces biofouling without harming fish or bioaccumulating in the environment. 

The innovation leverages thymol, a well-documented natural bioactive with antifungal and antimicrobial properties, stabilised through novel chemistry to achieve controlled release and longer-lasting effectiveness.

Early validation suggests the technology could reduce the need for repeated net cleaning, delivering major cost savings. 

We are seeking commercial partners and investors to collaborate on trials, support spin-out development, and explore applications across aquaculture and beyond.

Opportunity background
The project is currently advancing within BSI, with early market validation indicating strong demand from aquaculture operators. Engagements are underway with rope manufacturers and marine coatings companies, including interest from Australian aquaculture producers and broader marine sectors. BSI brings deep science capability and industry partnerships, with a proven track record in advancing innovation to commercial impact.

Potential other applications
Beyond aquaculture nets and rigging, the coating has potential applications in bivalve farming infrastructure, marine ropes and rigging, and as an ingredient in antifouling marine paints. 

Longer-term, the technology could also contribute to biosecurity efforts, protecting sensitive ecosystems such as the Great Barrier Reef by reducing invasive marine growth on vessels and infrastructure.