Whales dying off the coast of British Columbia and Alaska

CBC - Canada - The large number of dead whales appearing along the coast of British Columbia and Alaska since May is raising alarms among scientists.

Thirty dead whales have been detected in the Gulf of Alaska since May, representing a die-off more than three times the normal rate, according to the U.S. National Oceanic and Atmospheric Administration.

• MAP: Whale strandings in the Gulf of Alaska

Another six dead stranded whales have been reported along B.C.'s north coast over the same time period, also a significant increase above annual seasonal numbers.