Most Terrifying Prehistoric Sea Monsters

The Top Ten
1 Megalodon The megalodon is an extinct species of shark which was about 59 feet (18 meters) long and hunted in the seas until about 1.5 million years ago. It was similar to today's great white shark-but three times longer and 20 times heavier.

Megalodon had more than 250 huge, razor-sharp teeth and its mouth was so huge that it could easily swallow a person. The fossils of its teeth were once thought... read more

It have a great bite terrifying look every buddy is scared of sharks and it's the king and the biggest shark and aquatic carnivore animal

How in the world is helicorpion first its not scary its fascinating

The alpha predator of the seas.

2 Helicoprion
3 Livyatan Melvillei
4 Liopleurodon Liopleurodon is a genus of large, carnivorous marine reptile belonging to the Pliosauroidea, a clade of short-necked plesiosaurs. The two species of Liopleurodon lived during the Callovian stage of the Middle Jurassic Period.
5 Mosasaurus
6 Dunkleosteus
7 Tylosaurus
8 Kronosaurus

I think you should replace Kronosaurus with Predator x because Predator x was far larger and had a powerful bite force. Predator x bite force was probably the closest to rivaling Megalodon at up to 16 tons

9 Basilosaurus
10 Giant Stingray
The Contenders
11 Jaekelopterus Rhenaniae
12 Mauisaurus
13 Dakosaurus
14 Prognathodon
15 Elasmosaurus
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