What is the heaviest whale?

The biggest whales are the largest animals that ever existed on Earth. Certainly whales are the heaviest animals that ever existed. Whales are heavier than the heaviest dinosaurs, such as Argentinosaurus or Amphicoelias. Whales are long-lived animals. Some of them live more than 200 years – eg. humpback and bowhead. read more

The orca's size of up to 31 feet (9.4 meters) makes it the largest dolphin. The sperm whale, on the other hand, may not be the biggest whale, but it has the biggest brain to have ever existed on Earth. read more

In March 2014, a pack of orcas harassed a blue whale off California, with one of them biting the tip of the blue whale's tail fluke. The blue whale attempted to tail slap the orca and fled at high speed. read more