WASHINGTON (Reuters) - Using a bright orange electrocardiogram machine attached with suction cups to the body of a blue whale, scientists for the first time have measured the heart rate of the world's ...

Blue whales are the largest animals on the planet. They are powerful swimmers that migrate long distances to feed and breed, ...

Whales may be known as gentle giants, but they still have a looming presence as the world’s loudest and largest animals. The Antarctic blue whale can weigh up to 400,000 pounds and stretches to 98 ...

The blue whale has long been considered the largest animal to have ever existed, even dwarfing the biggest known dinosaurs. But now a new species threatens to steal the crown, and upends what we ...

Blue whales sing less when they are starving and sing more when food is plentiful, a recent study revealed. Researchers listened to whales off California for six years and found that their singing ...

Changing ocean conditions making whale prey scarce are causing the mammals to stop singing, a recent study has found.

Whale watchers touring the coast of Cape May got a rare glimpse of a blue whale — the world's largest animal — during a wildlife research trip earlier this month. The sighting happened Sept. 12 on a ...