Explainer: What is a shark?
Picture a shark. You might think of a great white stalking beachgoers in a movie. Or maybe a hammerhead, with its distinctive T-shaped noggin. Or the extinct megalodon, the largest…
Picture a shark. You might think of a great white stalking beachgoers in a movie. Or maybe a hammerhead, with its distinctive T-shaped noggin. Or the extinct megalodon, the largest…