Guide Note: The Blue Whale is believed to be the largest mammal that ever lived. A blue whale can be up to 200 tons, and because of it's rarity, populations are unknown. It is the most endangered of the great whales.
Fast Facts:
- They can live to be 110 years old
- They need to eat 4 tons of krill per day
- Their heart is the size of a Volkswagen Beetle
- They are bigger than 25 elephants
- They can be louder than a jet engine
- A female can produce 94 gallons of milk per day
- The tongue weighs more than an elephant