A polar bear stands on a ice flow in Baffin Bay above the arctic circle as seen from the Canadian Coast Guard icebreaker Louis S. St-Laurent Thursday, July 10, 2008. The Louis is on its annual voyage through Canada's Arctic that includes patrols through the Northwest Passage. In addition to serving the people of Canada's North the ship is carrying a team of scientists studying climate change and the health of Canada's three oceans. THE CANADIAN PRESS/Jonathan Hayward