Is the megalodon the biggest shark in the world?
It was, its extinct now. We now believe an adult megalodon was 55-65 feet in length.
megalodon shark was much bigger than whale shark cause a megalodon shark is almost 100 feet while an whale shark is just 62-75 feet. But the megalodon has been extinct for about 1.5 million years, leaving the whale shark the biggest shark alive. Actually, the largest whale sharks grow to nearly sixty feet, and the largest megalodon was roughly the same size.