What about the largest land animal? Today the elephant holds the title, but if we reach back into history, we can find even larger creatures. Many of the dinosaurs of the Mesozoic Era (about 252 million to 66 million years ago) were longer and more massive than modern elephants, hippopotamuses, and rhinoceroses. But growing conditions are different in the ocean. Weighing approximately 136 metric tons (150 tons) and growing to a length of more than 30 meters (98 feet), it is also the largest animal that ever lived. In terms of mass, Earth’s largest mammal is the blue whale ( Balaenoptera musculus). Britannica Explains In these videos, Britannica explains a variety of topics and answers frequently asked questions.This Time in History In these videos, find out what happened this month (or any month!) in history.#WTFact Videos In #WTFact Britannica shares some of the most bizarre facts we can find.Demystified Videos In Demystified, Britannica has all the answers to your burning questions.Britannica Classics Check out these retro videos from Encyclopedia Britannica’s archives.
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