Blue Whale

Blue Whale
The blue whale is the largest mammal ever to inhabit the Earth.
Estimated between 1,300 to 2,000, the population of blue whales is dangerously low.
Blue Whales are difficult to weigh because of their size. Most Blue Whales killed by whalers were not weighed whole, but cut up into manageable pieces first. This caused an underestimate of the total weight of the whale, due to the loss of blood and other fluids. Nevertheless, measurements between 150 and 170 tonnes (160 and 190 short tons) were recorded of animals up to 27 m (88 ft 6 inches) in length. The weight of a 30 m (98 ft) individual is believed by the American National Marine Mammal Laboratory (NMML) to be in excess of 180 tonnes (200 short tons). The largest Blue Whale accurately weighed by NMML scientists to date was a female that weighed 177 tonnes (196 short tons).
The Blue Whale is the largest animal ever to have lived. The largest known dinosaur of the Mesozoic Era was the Argentinosaurus, which is estimated to have weighed up to 90 tonnes (100 short tons), though a controversial vertebra of Amphicoelias fragillimus may indicate an animal of up to 122 tonnes (135 short tons) and 40–60 meters (130–200 ft).Furthermore, there are weight estimates for the very poorly known Bruhathkayosaurus ranging from 140 up to 220 tonnes, besides length estimates up to about 45 meters. The extinct fish Leedsichthys may have approached its size.However, complete fossils are difficult to come by, making size comparisons difficult. All these animals are considered to be smaller than the blue whale.
The lifespan of a blue whale is estimated to be 80 years.
Blue whales may also make sounds to communicate with other whales and to find a mate.Imagine what it would be like to be the biggest animal in the world swimming alone through the cold ocean waters.