These big babies can outweigh several of the most popular small car models. In fact, these titanic infants are the largest ...

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.

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 animal's own body weight. The water it takes in at the ...