What was the largest ocean predator ever?

What was the largest ocean predator ever? In addition to being the world’s largest fish, megalodon may have been the largest marine predator that has ever lived. (Basilosaurids and pliosaurs may have been just as large.)

In addition to being the world’s largest fish, megalodon may have been the largest marine predator that has ever lived. (Basilosaurids and pliosaurs may have been just as large.)