As Jessica Owens walked along the muddy banks of a river near Charleston, South Carolina, something caught her eye. She was out hunting for shark teeth. But this object was huge—about the size of her hand. It couldn’t be a tooth, could it? Believe it or not, it was! It had once belonged to a huge ancient shark called a megalodon.
The coastal area where the tooth was found was once covered with seawater. It was home to megalodons, some of the biggest sharks that ever lived. They measured up to 60 feet long. That’s longer than a school bus and about three times the length of today’s great white shark.