Where have British Columbia's resident killer whales gone?

Whale researchers say it's unprecedented that endangered southern resident killer whales are nowhere to be seen this year. Subscribe to CTV News to watch more videos:    / ctvnews   Connect with CTV News: For the latest news visit: http://www.ctvnews.ca/ For a full video offering visit the CTV News Network: http://www.ctvnews.ca/video CTV News on Facebook:   / ctvnews   CTV News on Twitter:   / ctvnews   Watch CTV News on Twitter:   / watchctvnews   CTV News on Google+: https://plus.google.com/+CTVNews/posts CTV News on Instagram:   / ctvnews   CTV News on Pinterest:   / ctvnews   --- CTV News is Canada's most-watched news organization both locally and nationally, and has a network of national, international, and local news operations.