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The European aquaculture sector faces a unique set of challenges and opportunities. While demand for sustainable and healthy seafood is growing, the sector, particularly the bivalve mollusc sector, faces environmental pressures, market fluctuations, and the need for continuous innovation. In this dynamic landscape, the OPTIMA project stands out as a significant initiative aimed at strengthening the skills and knowledge of shellfish farmers across Europe.

The European bivalve farming sector, which primarily includes mussels, oysters, and clams, plays a key role in food security and coastal economies. Bivalve farming is known for its low environmental impact, as the farmed species filter feed through water and therefore do not require external feed, potentially providing ecosystem services. Furthermore, bivalve farming does not involve the use of pharmaceuticals or antibiotics, which can contaminate the surrounding environment and reduce product quality.

Never the less the sector have to face with some problems:

Environmental issues: the impacts of climate change, such as rising temperatures and ocean acidification, directly affect the growth, health, and survival of bivalves. Harmful algal blooms (HABs) can also lead to production closures or product mortality.

Production inefficiencies: Despite its potential, the technological development of the European bivalve sector lags behind other aquaculture segments. Challenges include seed availability, predators, and disease outbreaks.

Market barriers, farming areas, and regulations: the sector faces challenges related to market demand for certain products, competition for marine space, and complex administrative procedures for obtaining licenses and authorizations.

Knowledge gaps: there is a continuous need to update farmers' knowledge regarding best farming practices, disease management, and issues related to overheating, predators, and alien species. Furthermore, there is a lack of knowledge among workers and entrepreneurs in the sector regarding the ecosystem services provided by this type of farming. It's no secret that bivalve farming, rather than impacting the marine environment, could potentially benefit it. For example, it could help eliminate eutrophication thanks to the filter-feeding potential of these mollusks, create new habitats and biodiversity hotspots on the hard substrates associated with this type of farming (farming structures and farmed products), and finally, store carbon dioxide in the calcium carbonate shells that would otherwise be lost to the environment.

Need to promote the product: the products resulting from this type of aquaculture, healthy, green, and with zero (if not positive) impact, should be better promoted and advertised by farmers to a public opinion that is often unaware of all the qualities listed above and often turns a nose up at the mention of "farmed product" and "aquaculture." However, in the case of bivalve molluscs, the difference between farmed and wild-caught, in terms of nutritional properties and quality, is practically zero.

Europe has recognized the above challenges, issuing in 2021 a text containing "Strategic Guidelines for a More Sustainable and Competitive EU Aquaculture 2021-2030", which will help promote sustainable growth, resilience, social acceptance, and greater innovation in this sector. These guidelines emphasize the importance of diversifying global aquaculture production toward low-trophic species such as bivalves and algae, supporting research, and simplifying administrative and legislative frameworks.

It is in this context that the OPTIMA "Good Practices in Mollusc Aquaculture" project, co-funded by the Erasmus+ program, plays a central role. Launched in October 2023 and scheduled for completion in April 2026, OPTIMA directly addresses the need to improve training and skills in the bivalve aquaculture sector. By focusing on training and skills development, OPTIMA aims to directly contribute to the EU's broader objectives for a more sustainable, competitive, and resilient aquaculture sector.

Equipping farmers with the latest knowledge and tools will enable them to adopt more efficient and productive practices, better respond to market needs, and address the complexities of climate change. The project's emphasis on e-learning and digital mentoring is particularly relevant in a sector where hands-on work often limits access to traditional training.

The OPTIMA project's approach helps bridge this gap, ensuring that valuable skills and knowledge reach those who need them most, ultimately contributing to the long-term viability and growth of bivalve farming in the EU.