One of the objectives of the EU Bioeconomy Strategy is to produce "more with less", a concept that includes the development of sustainable and knowledge-based fisheries and aquaculture [1]. Global aquaculture production reached 80.1 million tonnes in 2017, making it the fastest-growing animal food industry globally [2]. In 2017, fisheries and aquaculture production in the EU Member States reached 6.0 million tonnes of live weight, representing 3.5% of world production [6]. In the EU 81.2% of production was from wild fisheries and 18.9% from aquaculture [2]. EU aquaculture sector accounted for around 1.4% of world production in 2017 with Spain, France and Italy as the leading aquaculture countries in the EU in terms of volume, and France, Greece and Spain in terms of value [2]. Over the last decade, the value of EU aquaculture production has increased, but the volume has declined due to environmental concerns, thus leading to an increase in cultivation of high-value species such as salmon, seabass and seabream [2]. Biodiplomacy in the context of the bioeconomy is the dialogue between stakeholders to promote the use of bioresources under internationally and nationally agreed on principles to contribute to environmental sustainability and climate neutrality [3]. Industry, organisations or any actor involved in such a dialogue must be both an expert in the bioeconomy and possess a range of other qualities to be able to find sustainable pathways and shape the strategy and form of communication to maximise the outcome. The roots of biodiplomacy lie in the concept of biopolitics, which is part of the "Bios Theory" formulated by A. Vlavianos-Arvanitis and developed in the late 1980s [4]. Bios, which translates from Greek as "life", and the proposed theory is rooted in the belief that human beings should be able to interact harmoniously with the environment and all living beings [4]. Bioeconomy is also part of the "Bios Theory" and is seen as one of the possible salvations for the increasing number of people globally [5]. Almost 30 years later, the concept of biodiplomacy is starting to regain its relevance [6, 3] as a communication strategy to raise international public awareness of circular economy principles and more sustainable use of bioresources [6]. However, the concept of biodiplomacy has still been little explored and discussed in the literature. The study aimed to select aquaculture or fisheries products with the highest development potential to identify the most sustainable ones through a multi-criteria analysis. Based on the results, to develop a biodiplomacy communication approach that would serve as an educational and awarene