This animal is thought to be the biggest to have ever existed. Its stomach can hold a ton of food. Its tongue can weigh as much as an elephant. What animal could this be? The blue whale.
Whales, including the blue whale, live their whole lives in water. Yet, they are mammals, just like you. That means they are born live – not hatched from eggs – and breathe air through their lungs, not through gills. It also means that babies drink milk from their mother. But this is just the beginning of what makes these record-breaking animals amazing.
