The sperm whale ( Physeter macrocephalus ), on the other hand, may not be the biggest whale, but it has the biggest brain to have ever existed on Earth. “The fact that such a large whale existed that long ago suggests that large whales had been around for quite a while,” co-author Felix Marx, a palaeontologist at the Royal Belgian Institute of Natural Sciences in Brussels, told National Geographic. The orca's ( Orcinus orca) size of up to 31 feet (9.4 meters) makes it the largest dolphin. The discovery of the fossil also casts doubt on exactly when large baleen whales arose. The team suggests that huge whales might have evolved at least 3.6 million years ago if not further back in time, around 6 million years ago, millions of years earlier than previously thought. On average, Antarctic blue whales reach more than 100 feet. These marine mammals are surprisingly massive, bigger than any dinosaur you could imagine. And shockingly, many scientists believe it is the biggest animal to have ever lived. LARGEST WHALE FULLThe fossil skull of Giuliana and a drawing showing a full reconstruction of the skull alongside a human for scale. The blue whale is the largest creature to have ever lived on earth One of the most important reasons that whales have become so large is they have more space -. What Is The Biggest Whale In The World The Antarctic blue whale is the largest living creature on this planet. The lead researcher, Giovanni Bianucci from the University of Pisa, told Italian newspaper La Repubblica that the team would love to follow up their study and conduct more tests to confirm their findings and maybe even find more peculiar characteristics of this ancient animal. The skeleton is 1.5 million years old and is likely to be a blue whale, given the similarities between the fossil and living specimens.
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