The tongue of a blue whale weighs around 2.7 tonnes.
Blue whales are the largest animals ever known to have existed. They can grow up to 33 metres in length and weigh more then 180 metric tons.
As the largest animal alive, the Blue Whale has the largest instance of several body parts:
- Its tongue weighs around 2.7 tonnes
- Its mouth is large enough to hold up to 90 tonnes of food and water
- Its heart typically weighs 600 kg (1,320 lb) and can reach 900 kg in exceptional cases
- Its aorta is about 23 cm (9 in) in diameter
Blue whales were abundant in nearly all the oceans on Earth until the beginning of the twentieth century. For over 40 years, they were hunted almost to extinction by whalers until protected by the international community in 1966. A 2002 report estimated there were 5,000 to 12,000 blue whales left worldwide..