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Top 10 Terrifying Prehistoric Sea Monsters
10 More Horrifying Archaeological Discoveries
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Coming up:
10. The size of the Mariana Trench
9. The Mariana Trench mystery sound
8. Strange undersea volcanoes
7. The Mariana Trench Megalodon
6. The Hadal Deep
5. Sounds from the Deep
4. The crazy marine life of the Mariana Trench
3. The secrets of the ocean floor
2. The whole Mariana Trench is a giant mystery
1. The most horrifying beast in the Mariana Trench
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