By Olivier MORIN / AFP Half a dozen beluga whales dive and reemerge around tourist paddle boards in Canada’s Hudson Bay, a handful of about 55,000 of the creatures that migrate from the Arctic to the bay’s more temperate waters each summer. Half a dozen beluga whales dive and reemerge around tourist paddle boards in Canada’s Hudson Bay, a handful of about 55,000 of the creatures that migrate from the Arctic to the bay’s more temperate waters each summer. Far from the Seine river where a beluga strayed in early August north of Paris, the estuaries that flow into the bay in northern Canada offer…