A newly studied species of ancient whale might be the heaviest animal ever found. Scientists reported Wednesday that the creature could challenge the blue whale’s title as the heaviest animal to live on Earth. They've been digging up massive fossils from the creature in the Peruvian desert over the past decade. The bones include huge vertebrae from its backbone, ribs and a hip bone. Based on the pieces of the skeleton, scientists estimate that the animal could have weighed more than a blue whale, though it probably wasn't as long. It had dense and heavy bones that may have helped it live in shallow, coastal waters.