Time travelers should stay out of the water! For this list, we'll looking at the most fascinating and remarkable sea creatures from prehistoric times. Our countdown includes Mesosaurus, Kronosaurus, Helicoprion, Megalodon, Livyatan Melvillei, and more! read more...
Top 20 Most Incredible Prehistoric Sea Monsters
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VOICE OVER: Rebecca Brayton
WRITTEN BY: Garrett Alden
