A blue whale's tongue can weigh as much as one elephant! The heart of a blue whale can weigh up to 400 pounds, and the blue whale's aorta, the largest artery in the body, is wide enough for a ...

The water it takes in at the same time as its food is pushed out of the mouth by its enormous tongue, through strainer-like baleen plates which hang down from the upper jaw. Watch how a blue whales ...