How Big Was the Monstrous Megalodon Shark?

The mighty megalodon is the most famous extinct shark on earth – with giant jaws and a tremendous size that inspire myths and science fiction. Because this monstrous shark was a fish made mainly of cartilage, its huge teeth were its only artifacts. This video explores how scientists use teeth to determine the size of sharks – from the great whites that travel the oceans today to the giant sharks of the past.