Nature Based Solutions (NBS) are becoming increasingly important in both the EU and individual countries' political agendas, as a sustainable means to reduce the risk posed by hydrometeorological hazards. However, as the use of NBS is increasing, a number of barriers regarding their practical implementation also becomes apparent. A number of review studies have summarized and classified barriers, mainly in urban settings. PHUSICOS is a H2020 Innovation Action to demonstrate the use of NBS in rural and mountain landscapes. Large scale demonstrator case sites with several sub-projects are established in Italy, Norway and in the French and Spanish Pyrenees. The present paper describes the project's NBS measures, and their experienced barriers, some of which have resulted in full cancellation of the planned interventions. Many of the barriers experienced in rural settings have the same root causes as the ones described from urban areas, and the main barrier-creating mechanisms are institutional factors, resistance among stakeholders and technical and economic issues. The key element, however, is lack of knowledge about the ability of NBS to deliver a series of co-benefits in addition to their risk-reducing effects, and that long-term thinking is required to see the effect of many of these co-benefits.

In the marine environment, fish parasites are present in most species of seafood. The most com-mon is Anisakis spp. a nematode that can parasitize human tissues causing anisakiasis and al-lergies, in some cases with a strong reaction such as anaphylactic shock in sensitive people. This happens when people ingest live or dead larvae present in the muscles or viscera of a wide range of seafood, fish and cephalopods. Consumer education has been positioned as one of the most ef-fective alternatives for its prevention. This study sought to identify the species that present the greatest risk of anisakiasis for consumers taking into account sex, age and their knowledge about this parasitosis. The objective was to offer recommendations for better consumer information to-wards the prevention of infections by worm larvae. The results revealed that the species most at risk were hake and cod and that young participants know more about the risks of anisakiasis from raw seafood. The gaps detected in the knowledge about the ability of thermal treatments to eliminate parasites, especially in allergic people, must be addressed for better prevention, sug-gesting campaigns adapted by sectors of the population.