8 Facts About Blue Whales, the Largest Animals Ever on Earth

Blue Whales Can Grow More Than 100 Feet Long

They are enormous, typically measuring between 24 and 30 meters (80 to 100 feet) in length. There have been tales of blue whales measuring up to 108 feet (33 meters) in length

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They Can Weigh as Much as 30 Elephants

These gentle giants weigh between 200,000 and 300,000 pounds, or 90,000 to 136,000 kg, or roughly 100 to 150 tons, on average. Some have a maximum weight of 220 tons,

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They Have Big Hearts

The heart of a blue whale is enormous. At over 400 pounds (180 kilograms), the largest heart in the animal kingdom, it is about the size of a bumper car and weighs about the same as a gorilla.

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They Have the Biggest Babies on Earth

When they are born, blue whale calves are easily the biggest babies on Earth and are among the largest creatures when they reach adulthood.

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They’re Unusually Loud

The loudest animals on the earth are, in fact, blue whales. The sound of a jet engine is 140 dB; a blue whale's call is 180 dB. People as far distant as 1,600 kilometers can hear their language of pulses, groans, and moans.

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They Eat a Lot of Krill

The small crustaceans, known as krill, can fill a blue whale's stomach to the brim with 2,200 pounds (1,000 kg) at a time. Over 9,000 pounds (4,000 kg) of the tiny guys are needed every day

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They're Pretty Fast

Traveling extensively, blue whales spend their summers feeding in the northern regions and migrate large distances to the equator in preparation for winter.

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They Have Long Life Spans

Among the species with the longest lifespans on Earth are blue whales. Scientists can approximate an individual's age by counting the layers of wax in their ears, a process similar to counting tree rings.

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