The objective of this study is to fill knowledge gaps in the understanding of drivers for primary production in James Bay. Understanding the spatial variability in conditions throughout the bay and throughout the water column aid in describing the variability of conditions in relation to light and nutrient availability. These variation in conditions are expected to impact rates of primary production spatially. The next step in this study is to quantify primary production estimates within the bay and look at interannual differences in the 2021 and 2022 cruises.