Unexplained die-off of North Atlantic right whales in Canada

This news item from CBC reports on the tragic death of five right whales all from the Gulf of St. Lawrence over the past few weeks. Canadian and US scientists are working in collaboration to document the event and determine the cause of death.

http://http://www.cbc.ca/news/canada/new-brunswick/six-dead-right-whales-1.4176832

Canadian authorities report an unprecedented spate of right whale deaths from the Gulf of St. Lawrence