Once ruling the ancient oceans, this prehistoric predator is often cited.. The megalodon is the largest shark to have ever lived in the world’s ocean.
Megalodon, (carcharocles megalodon), member of an extinct species of megatooth shark (otodontidae) that is considered to be the largest shark, as well as the largest fish, that ever lived.. The megalodon, which went extinct millions of years ago, was the largest shark ever to prowl the oceans and one of the largest fish on record.