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 ... refrain from eating when nursing ...

Krill make up the vast majority of a blue whale's diet. The blue whale is a filter-feeder. Its throat has an expandable, pleated structure to engulf a volume of water and prey that is greater than the ...

The blue whale has one of the largest appetites of any animal, eating up to four tonnes of krill every day. Blue whales, which have baleen plates, feed by taking huge mouthfuls of water and food. They ...

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 ...