A Human Could Easily Fit Inside A Blue Whale's Heart

At the Museum of Natural History in Santa Barbara, California, a skeleton of one of these blue whales that died in the 1980s and washed ashore has been preserved. One of five such skeletons preserved in the entire country, the skeleton is enough to make you feel like an ant. Measuring 72-feet long and weighing 7,700 pounds, the blue whale skeleton is named "Chad," after a donor, per the Santa Barbara Museum of Natural History. However, blue whales can stretch up to 100 feet long and weigh more than 200 tons, according to National Geographic.

In order to pump blood to the far corners of this enormous body, blue whales' circulatory systems have to be gigantic too. Their hearts alone are the size of a bear, tiger, or other large mammal, weighing in at 400 pounds, according to Whale Facts. On average, their hearts measure five feet long and four feet wide, the same size of the average woman in the U.S. (per National Geographic, ABC News). That means an adult person could actually fit inside of a blue whale's heart. Theoretically, of course, unless they somehow managed to learn to breathe underwater or swim through all the blood flowing through it.

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