Read more here:http://www.adn.com/2012/09/10/2619704/increased-sightings-of-orcas-in.html
Whale surveys spot orca in the Alaska Arctic - "Orca have been seen before in the Arctic ocean but are considered unusual that far north."
http://www.sacbee.com/2012/09/10/4806095/whale-surveys-spot-killer-whales.html