The Blue Whale is the largest animal ever to have lived on earth. Their tongues alone can weigh as much as an elephant - their hearts, as much as a car.
In the wild whales live for a long time - generally the larger species living longest. Bowhead whales spend their lives in cold Arctic waters. They may be the world’s oldest mammals and are the longest lived of all whales – possibly over 200 years!
Some baleen whales sing. Particularly the blue whales and the humpback whales are well known for singing