Megalodon
Leviathan
Predator X
Dunkleosteus
Mosasaurus
Pterygotus
Other (specify)
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I think there are a few others which deserve honorable mentions. For instance, Kolponomos, aka "The saber-toothed otter bear":
s3-us-west-1.amazonaws.com/.../Kolponomos.jpg
Doesn't it look cute and cuddly? Or Helicoprion, a creature which makes Jaws and Piranhas look toothless in comparison:
cdn.smosh.com/.../extinct-ocean-helicoprion.jpg
Or Titanoboa, the 2 tonne snake which was the biggest creature to survive the extinction event which wiped out the dinosaurs, and the world's top predator for the next 10M years until it got outsized by the whales? Here's a scale model of an average sized one:
www.wired.com/.../titanoboa-getty-1024x689.jpg
Predator X looks like a liopleurodon... which has a name... besides some lame common name. Liopleurodon is such a cooler name :P
https://i.makeagif.com/media/7-23-2015/uDl7B5.gif
Liopluerodon wasn't actually that big.
upload.wikimedia.org/.../...tory_Pliosaur_Size.jpg
Pliosaurus funkei is the scientific name of predator x
I don't have a favourite prehistoric sea monster..
67.media.tumblr.com/.../...egd3i52r1twdx0h_500.gif
This is going to give me nightmares... thanks asker!!! Another reason to never swim in the ocean.
Saammee! I think I remember having a video game when I was younger with prehistoric water dinosaurs, was cool but freaky.
@heavenlyhannah ugh so creepy! It mak s me think about this
i.ytimg.com/vi/6tZr8WlH6xI/maxresdefault.jpg
OHHH MMYY GOOSHH NOOOOO
Opinion
8Opinion
Definitely the Megladon! Imagine a great white shark the size of a whale shark! I would be scares if it's still lurkin' below the depths 😳😳😳
Predator X, though all sea monsters scare me lol. I'd much rather face off with something on land :p
What about amphibious ones like Titanoboa? Here's a replica of one:
www.blooloop.com/.../550057736c874-titanoboa.jpg
Basilisk, eat your heart out...
Damn they all scare me xD i guess the megalodon because thats the one i know most about
Wow, i didn't know there were really large scuba divers in prehistoric times.
Van Lake Monster, it was founded in Turkiye years ago.. D;
https://i.hizliresim.com/byqgnn.jpg
Megalodons are so mainstream, they're total sell-outs, maaan.
Nessy is a swamp monster who has been forced to sea because of human development.
Does the Lockness monster count 😊 I picked predator X Though
Anomilacaris first known creature with eyes.
None they're all scary af
Megalodon! I was obsessed with them at one point.
Leviathan
People have made documentaries about Megalodon and Predator X,
Now they should make one about Leviathan
https://www.youtube.com/watch?v=Oknj0SzQX-k
The lockness monster
Pterygotu😃
the mosasaurs
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