Building on previous work, our objective is to assess current levels of oil-related contaminants in species of seabird eggs as part of a large-scale assessment of contaminants in relation to shipping traffic. In the future it is expected that shipping and boat traffic in Baffin Bay/Davis Strait will increase, while in the Hudson Bay region we expect some vessel traffic to decrease. While we have learned much about how ecosystems can be affected by oil spills in some regions, there is little data on oil exposure and the potential effects of oil-related contaminants in northern ecosystems. We aim to start collecting a wider range of species eggs in regions that are experiencing different levels of shipping to examine how the current levels of oil exposure, and archive samples in the case of a future oil spill. This will occur alongside our legacy contaminants monitoring so that we can better understand global and local patterns.Studies of seabirds, including thick-billed murres (Uria lomvia), northern fulmars (Fulmarus glacialis), common eiders (Somateria mollissima), black-legged kittiwakes (Rissa tridactyla), and black guillemots (Cepphus grylle) have shown that seabirds are affected by a number of contaminants in the Arctic region. To date most work on contaminants in seabirds has focused on legacy contaminants, including pesticides and flame retardants, but there are a suite of chemicals of emerging concern in the Arctic that have only been addressed in a limited number of species or at a few colonies in the Arctic region. Preliminary studies of seabirds at near Qikiqtarjuaq and Nunatsiavut has shown that seabirds are also exposed to plastic pollution and oil-related contaminants as well. Currently in the Canadian Arctic, there are low levels of shipping and oil exploration related activities as compared to many other regions. As offshore oil and gas activities might proceed in Baffin Bay and Davis Strait, there is a need to assess the current levels of oil-related contaminants exposure in marine species, and the potential effects. A Strategic Environmental Assessment in the Baffin Bay-Davis Strait recently highlighted the need to assess how activities relating to oil and gas, and current levels of activities, are affecting local biota. This will include the collection of eggs with partners at various sites in Nunavut, including Arviat, Iqaluit, Qikiqtarjuaq, Resolute, Nasurvalik (Tern Island), and Pond Inlet. We will collect eggs from the following species, based on their presence at each of the locations:-common eider-black guillemot-thick-billed murre-glaucous gull-black-legged kittiwake-northern fulmar-Sabine’s gull-Arctic tern-Herring gull-Snow goose-Cackling goose-King eider-Iceland gull