Caught by surprise as the mercury fell, a pod of about 12 orcas spent two days bobbing up and down in a truck-sized breathing hole through thick sea ice, with no way out. The whales were way too far inland and north of where they should be this time of year, trolling the waters outside of Inukjuak, Quebec, in Hudson Bay. Dramatically warmer Arctic waters from this summer are one reason why, according to Canadian environmental officials. Climate change has reduced sea ice cover in Hudson Bay, which enables orcas to spend more time there feeding. Then the temperatures shifted and sea ice started to form, boxing the whales in.