This project took place on the landfast sea ice in southwestern Hudson Bay, near the mouth of the Nelson Estuary. The program was based out of the Nanuk Polar Bear Lodge, which is located near the shore of Hudson Bay between the mouth of the Nelson River and Cape Tatnam. The seasonal ice cover that forms annually within Hudson Bay is composed of both mobile pack ice and landfast ice that forms a narrow band of stationary ice in the near shore areas of Hudson Bay. In southwestern Hudson Bay the landfast ice provided an excellent opportunity to study the freshwater-marine coupling near the mouth of the Nelson River. The area is typically ice covered from November to June, though the landfast ice cover typically becomes unstable is forced offshore during May to early June.