This documentary focuses on life in ancient oceans during each prehistoric period, providing a fine focus on evolutionary proceedings. Nothing, not the carnivorous dinosaurs of the past, nor the imagined sea serpents and monsters of maritime history, nor the great white shark, salt water crocodile, killer whale and leopard seal of today can compare to the horrifying hunters of the prehistoric oceans. You will feel a lot more comfortable about going out for a swim or an afternoon boat ride knowing that such behemoths are extinct today!
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