Flexens, Lhyfe, and Stockholm University have concluded the BOxHy project aimed at combating deoxygenation in the Baltic Sea by injecting oxygen produced from hydrogen. The project addresses the global issue of ocean 'asphyxiation,' caused by factors like global warming and water pollution. Deoxygenation impacts marine life and fish populations, highlighting the urgency of mitigating CO2 emissions and nutrient pollution. The collaborative project outlines the 'BOxIn' pilot for offshore oxygen injection, supported by the UN, to reoxygenate dead sea regions. The partners conducted a detailed survey to identify suitable coastal sites and plan a 6-year pilot project expected to cost between 5 to 6 million euros. By utilizing offshore hydrogen production sites, Lhyfe aims to provide oxygen to the ocean, emphasizing the need for strategic, scientific methodologies in reoxygenation efforts. The initiative aligns with the UN Decade of Ocean Science for Sustainable Development, reflecting a global shift towards recognizing reoxygenation as a crucial aspect of sustainable ocean management.