The field of aquaculture faces significant challenges such as high water demand, eutrophication, biosecurity risks, and dependence on fishmeal and fish oil. Biofloc technology (BFT) is an innovative approach to addressing these challenges by recycling carbon and nitrogen waste into valuable microbial biomass. Research in BFT focuses on advancing aquafeed formulation and manufacturing while promoting beneficial microorganisms within the biofloc. As part of this effort, the SwitchFloc project addresses current BFT challenges through an interdisciplinary and intersectoral research and training programme. This includes international secondments and network-wide training events that bring together experts from various disciplines to share knowledge and best practices. The outcome will be a better understanding of how to effectively implement BFT systems, resulting in improved animal health and productivity. In addition, research will focus on developing new strategies for controlling bioflocs and managing waste, reducing the environmental impact of aquaculture operations. To achieve these goals, candidates with expertise in biology, oceanography, geology, geochemistry, and geophysics are required to participate in this project. PhD holders in relevant fields will be trained in state-of-the-art techniques and technologies to enhance their skills and prepare them for careers in research and industry. Through collaboration with leading institutions and organizations, participants will gain access to cutting-edge facilities and equipment, expanding their professional networks and opportunities. The research activities will focus on key aspects of BFT, including