How does climate change affect oxygen level?

Climate change impacts oxygen levels primarily through the warming of oceans, which reduces their capacity to hold dissolved oxygen. Additionally, increased stratification of water layers due to rising temperatures can limit the mixing of oxygen-rich surface waters with deeper layers. Furthermore, the proliferation of harmful algal blooms, fueled by nutrient runoff and warmer temperatures, can deplete oxygen in water bodies, leading to hypoxic or anoxic conditions that threaten marine life.