MariParks at sea: finding the balance between economy and ecosystem
During the European Ocean Days 2026, an expert workshop on the governance of so-called MariParks took place on 4 March. The workshop was organised within the European NESB project by Mantis Consulting and IMDC, with support from Blue Cluster. Companies, policymakers and experts gathered in Brussels to exchange insights on multi-use at sea.
MariParks were presented as a way to better organise different activities at sea. By creating clear agreements and designated zones, they can provide companies with greater investment certainty, while also taking into account the impact on the ecosystem.
A key element of the discussion was the so-called EBA Ladder. This is a practical framework that translates the ecosystem-based approach into concrete decisions. It supports companies in working across three pillars: ecosystem insight, targets and measures, and transparency and collaboration.
The workshop showed that such a framework can help align projects more effectively and improve the monitoring of impacts at sea, including across different zones.
From permits to incentives
During several breakout sessions, participants explored the conditions needed to make MariParks feasible. One of the key proposals is to move from individual permits towards zones where multiple activities can be combined. This could provide greater long-term clarity and better accommodate future developments.
Incentives were also discussed. These include European-level guidance to create a more level playing field between countries, as well as systems that take into account not only economic return, but also societal value.
In addition, participants looked at ways to make permitting simpler and more flexible. One possible approach is a single overarching permit for a MariPark, complemented by activity-specific conditions.
Room for innovation
Participants also highlighted the importance of flexibility. One proposal is to include dedicated zones within MariParks where new technologies can be tested, without requiring a full permitting procedure from the outset.
The discussion also addressed how to deal with cumulative effects — the combined impact of multiple activities. One approach is to work with thresholds, linked to measures that are triggered when these are approached or exceeded.
Next steps in the NESB project
The outcomes of the workshop will feed into the further development of the NESB project. They will serve as input for policy recommendations and a blueprint for MariParks.
The next steps will focus on further developing a practical approach to multi-use at sea.
The NESB project is co-funded by the European Union. The views and opinions expressed are those of the project consortium only and do not necessarily reflect those of the European Union or CINEA. Neither the European Union nor the granting authority can be held responsible for them.
