Human activity is still killing right whales, one of the most endangered animals in the ocean.
An analysis of four decades of whale deaths shows that attempts to prevent them have not had a demonstrable impact.
Only around 460 North Atlantic right whales (Eubalaena glacialis) are thought to be swimming the waters off the eastern seaboard of Canada and the United States. The governments of both countries have implemented several measures to protect whales from becoming entangled in fishing gear or being hit by ships, such as the US ‘ship strike rule’ that limits vessel speeds in certain areas.
That rule came into force in 2008 and is due to expire next year.
