With spring well underway, the North Atlantic right whales that migrated to Georgia to give birth here over the winter have migrated back north to their feeding grounds off New England and Canada.
Canada's last captive killer whale died on Thursday at Marineland, according to local media. The orca, who has been in captivity since she was about 3 years old, was 47.
Experts don't know what's behind the years-long trend of whale deaths. But there's no evidence connecting the deaths to offshore wind development, which is less noisy than fossil fuel exploration.