The European Food Safety Authority (EFSA) has taken a deep dive into how chemicals from aquaculture feed might be affecting marine sediments, delivering a scientific tool that could make environmental risk assessments more precise and site-specific. This development is likely to engage aquaculture businesses, environmental regulators, and marine scientists, who all have stakes in the safety and sustainability of marine farming.
Released on 30 January 2026, this External Scientific Report titled "Model development to predict environmental concentrations of chemical substances in marine sediment when the substance is applied via feed in marine aquaculture: Task 1.3. Formalise and implement the pilot model" was published by EFSA, the EU’s food and feed safety authority.
This is an assessment and model implementation report rather than a new legislative act. It formalises and translates a previously conceptualised transport and transformation model for feed additives into operational code, consisting of four integrated components: a Python cage model, a feed additive transformation model implemented in the Framework for Aquatic Biogeochemical Models (FABM), a physics model (pyGETM) to simulate local oceanographic conditions, and a final predicted environmental concentration (PEC) assessment. The model includes no prescriptive numerical targets but provides a tool for expert users to predict additive accumulation based on different environmental and operational parameters.
EFSA’s approach increases the granularity and practical applicability of environmental exposure assessment tools, reflecting a boost in regulatory science capabilities. It leans towards strengthening technical modelling capacity at the EU level, which could reduce uncertainties in evaluating environmental risks from aquaculture additives. This prioritises environmental protection by aiming to improve scientific rigor, but also poses increased operational complexity for industry stakeholders who will need to provide detailed input data and potentially adjust practices based on model outputs.
Key stakeholders affected include aquaculture producers who must adapt to nuanced environmental monitoring, national authorities who gain a robust tool for regulatory assessment, environmental NGOs concerned with marine ecosystem health, and EFSA itself as it expands its scientific oversight and data transparency through open-source code availability.
Institutionally, this report likely marks an incremental step in EFSA’s ongoing efforts to refine aquaculture safety assessments. While not a regulatory endpoint, it sets the stage for potential future integration of such predictive models into formal risk assessment frameworks, inviting broader uptake by Member States and possibly reactions or complementary initiatives from environmental agencies and industry bodies across the EU.