Wildfires are a natural ecosystem disturbance, capable of devastation but also of generating and fertilising terrestrial ecosystems. Recent work also suggests a previously underappreciated role of fires in the Earth System: providing essential nutrients (e.g., nitrogen, phosphorus, and iron) to remote marine ecosystems. This new aerosol nutrient supply has the potential to stimulate marine primary productivity if it alleviates nutrient stress sufficiently. Here, we present results across a series of recent studies, using satellites, long term station observations, and the Community Earth System Model, which all point to the possibility of fire aerosol deposition altering marine biota, in different ocean regions, by providing the needed cocktail of nutrients. We focus discussion mainly on two examples: how nitrogen supply could impact Arctic Ocean productivity and how iron supply could impact Southern Ocean productivity.