The aim of this poster is to present a new research project called Hydrogen Gas and Crayfish (VOK). The research project was initiated by the local fisheries management NGO in Ånge municipality in Sweden. Their challenge for future generations is to be able to fish for Noble crayfish (Astacus Astacus) in river Ljungan since the area has been hit by crayfish plague. At the same time, Ånge municipality is situated within the Swedish green industry belt that is currently under development. This means that P2X industries such as hydrogen gas production is developing in the region. Residue products from hydrogen gas production is oxygen and heat. To ensure the long-term survival of the crayfish and sustainable fishing of crayfish in river Ljungan for future generations, the use of water needs to be governed. Also, public, non-profit associations, municipalities and companies need to be involved in the work to promote the crayfish and prevent the spread of crayfish plague. The aim of the research project is to study how water management in hydrogen gas production can be used to ensure the survival of the crayfish. In doing so, the project can contribute to a better understanding of how new P2X industries can contribute to the sustainable use of water resources, thus improving biodiversity and creating sustainable rural development. We are doing this through a blue innovation that involves creating an ark site for Noble crayfish in connection with a hydrogen gas factory.