I’m looking at the path of and composition of water entering and leaving the Salish Sea through the Juan de Fuca Strait, by applying Lagrangian particle tracking to three-dimensional physical-biological-chemical ocean circulation models of the region. This knowledge will tell us about the net fluxes of biogeochemical tracers such as dissolved inorganic carbon and nitrate, the pathways of pollutants such as plastics, and will shed light onto the sensitivity of the of the Salish Sea to human influence and climate change.