Seven right whales found dead in 'devastating' blow to endangered animal

Carcasses found off Canada in recent weeks in what may be biggest single die-off of one of world's most endangered whale species, expert says

Seven North Atlantic right whales have been found floating lifelessly in the Gulf of St Lawrence, off Canada, in recent weeks, in what is being described as a "catastrophic" blow to one of the world's most endangered whales.

The first whale carcass was reported in early June. Within a month, another six reports came in, leaving marine biologists in the region reeling.