It says killer whales in the eastern Canadian Arctic have been observed preying mostly on beluga whales and narwhals, followed by bowhead whales and seals. As the Arctic warms, some polar bears ...

It says killer whales in the eastern Canadian Arctic have been observed preying mostly on beluga whales and narwhals, followed by bowhead whales and seals. “We think there’s going to be a big ...

Computer models helped decode whale communication. But some scientists say there are barriers that cannot be overcome.