The blue whale is a true marvel of the marine world ... Weighing around 200 tons, their heart is the size of a small car, and ...

Five families of orcas joined forces to hunt down and feed on a blue whale, the largest creature on the planet, in what was an extremely rare sighting off Australia. More than 60 orcas worked ...

Blue whales lunge through large swarms of krill with their mouths open, taking in more food in one mouthful than any other animal on Earth. Krill make up the vast majority of a blue whale's diet ...

The blue whale is the largest animal ever known to have lived on Earth. Blue whales are largest of all baleen whales and are found worldwide. They have a long slender body with a proportionally ...