Even their inner organs are weighty. The heart of a blue whale can weigh up to 1,300 pounds, while its tongue can weigh 5,400 pounds, which is the average weight of an adult female elephant.

"A Blue Whale's tongue weighs as much as an African elephant, its heart is the size of a car and a Blue Whale is 33x what a T-Rex weighs," the owner said.

Blue whales sing less when they are starving and sing more when food is plentiful, a recent study revealed. Researchers ...

The blue whale, which can reach up to 100 feet (30 meters) long and weigh 200 tons, lowers its heart rate to as little as two beats per minute as it lunges under the ocean surface for food ...

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

Whale songs provide key insight into ocean ecology, allowing scientists to make estimations on the prevalence of the species ...

Massive blue whale seen off the coast of Massachusetts in rare back-to-back sightings Blue whales are the largest animals on Earth, according to the National Oceanic and Atmospheric Administration.

Researchers completed genomic research on carcasses of the largest animals that have ever lived to understand North Atlantic whale populations.