Some of the largest animals ever to exist have lived beneath the ocean’s surface. From the enormous megalodon, a prehistoric shark that grew far larger than today’s great whites, to the blue whale, the largest animal known to have ever lived, the oceans have been home to some truly remarkable giants.
In this A-Z Animals video, we explore the largest marine animals throughout Earth’s history, including extinct predators and massive species still swimming our oceans today. Discover how big these creatures could grow, how they compare with modern marine life, and how scientists use fossil evidence to estimate the size of animals that disappeared millions of years ago.
