Additional projects studied the transfer of contaminants from females to pups, the impact of contaminants on immune system function, seasonal movements, diving activity and the measurement of heart rate as an indication of energy expenditure. Scientists have also observed the seal hunt in order to collect data on the age composition of the harvest as well as on “struck and loss”. In any harvest, animals may be killed but not recovered and therefore not included in the reported landings, a factor referred to as “struck and loss”. These projects are carried out in collaboration with the University of Waterloo, Laval University, Memorial.