How big is the biggest blue whale ever recorded?

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The heaviest blue whale ever recorded weighed 418,877 pounds. It was captured in Southern Ocean, Antarctica, on March 20, 1947. The longest blue whale ever recorded measured 110 feet and 28 inches. read more

The blue whale is the largest animal known to have ever lived. Blue whales are difficult to weigh because of their size. They were never weighed whole, but cut into blocks 0.5–0.6 meters (1.6–2.0 ft) across and weighed by parts. This caused a considerable loss of blood and body fluids, estimated to be about 6% of the total weight. read more

Blue Whales are the largest known living animal species on earth. Animals that were as large as 27 meters in length (nearly 90 feet) and weighing over 170 tonnes have been recorded. Since these animals were measured and weighed after they were cut up into manageable pieces, the actual size and weight could be even more. read more