36 million years B.C., a pregnant Basilosaurus whale resorts to desperate measures to find food for herself and her unborn infant. On land, mammals are growing into enormous creatures.
Did You Know?
Upon discovery, Dorudon was initially mistaken for a young Basilosaurus. See more
When the Basilosaurus leaves the mangroves, its tail doesn't disturb the water's surface as it flaps with it. See more
When the dinosaurs disappeared, so too did the gigantic marine reptiles which once terrorized the oceans. For almost twenty-five million years, there was nothing around to eat the sharks. But there are now awesome new monsters of the deep.