The blue whale is the largest mammal on earth. This species reaches lengths of 100 feet long and weighs up to 200 tons. The blue whale is believed to be the largest mammal ever to exist on earth.
The blue whale is also the loudest animal on earth. The sounds it makes reach around 180 decibels, and blue whales can hear each other across a distance of 1,000 miles. Although this is the largest mammal, it eats some of the smallest organisms, consuming up to four tons of krill every day. Newly born blue whale calves stretch to 25 feet and weigh 3 tons. These monster-sized animals live an average of 80 to 90 years, though the oldest is thought to have been around 110 years old.Learn More
At 170 to 200 tons, the blue whale is larger than any dinosaur known to have lived. The largest dinosaur lived in the Mesozoic Era and was the Argentinosaurus, which weighed up to 99 tons.Full Answer >
Blue whale hunting is banned by the International Whaling Commission, and the blue whale is listed as endangered by the IUCN Red List of Endangered Species and the U.S. Endangered Species Act as of 2014. Other conservation efforts include monitoring populations by satellite tags and shipboard observers.Full Answer >
Depending upon the species, a whale's stomach can be enormous, holding up to 2,200 pounds of food in the case of the blue whale. This whale's main diet consists of krill and copepods filtered through stiff, comb-like teeth called baleen plates.Full Answer >
Mammals, including humans, belong to the Mammalian class, which is the highest order of vertebrates. Mammals have a backbone, grow hair, produce milk for the nourishment of their young via mammary glands and are warm-blooded, or endothermic.Full Answer >