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.

The blue whale's tongue alone is as heavy as an elephant. Now, the Perucetus colossus may overthrow the blue whale's claim to the heavyweight title. In an article published in the journal Nature on ...

First blue whale of the season was spotted in Northern California by whale watchers. Are blue whales endangered? How big are blue whales?

First blue whale of the season was spotted in Northern California by whale watchers. Are blue whales endangered? How big are blue whales?

For nearly half a century, Ms. Blue–an 87-foot-long whale skeleton—has welcomed over a million visitors to Long Marine Laboratory and the Seymour Marine Discovery Center, spurring interest in marine ...

First blue whale of the season was spotted in Northern California by whale watchers. Are blue whales endangered? How big are blue whales?

First blue whale of the season was spotted in Northern California by whale watchers. Are blue whales endangered? How big are blue whales?

First blue whale of the season was spotted in Northern California by whale watchers. Are blue whales endangered? How big are blue whales?