The Livyatan, according to Sophie, is an extinct whale that lived nine million years ago. It is said to have been similar in size to the modern-day sperm whale, was considered one of the top predators of that time, and even shared the same waters as the megalodon shark. That was hard to imagine, however. “The megalodon?” I scoff. Everyone knows it was king of the ocean. Sophie’s eyes widen a fraction. “They were similar in size.” “It’s just difficult to picture a whale taking

“Is that what I think it is?” I lean forward in my chair, squinting at the computer screen. A sharp object protrudes from a piece of the...