10 Biggest Sea Dinosaurs That Ever Existed on Earth

These all look like they could be the Lock Ness Monster

These arent dinosaurs bud

That was such a cool dinosaur but I this mosasaurus is better .

Plesiosaurus

Let's take a moment for the little bird perched on the giraffes neck and sharing a meal together! Best clip of the whole video, IMO

They are not dinosaurs they are marine reptiles

Someday advanced insectoid creatures will
be excavating and examining the fossilized remnants of prehistoric extinct humans.

Why is #9 smaller than number 10?
Why is #8 smaller than #9 and #10?

ラベンダータウン

I show you maui

And I though the mosasaurus was going to be the last and biggest one

I like dinosaur

What happens to the plesiasaur????

Have you been to Jurassic park? They have a scene of a Mosasaurus eating a shark

You forget to mention hydrotherosaurus ,elasmosaurus and temnodontosaurus

Kinda seems like you grabbed anything that lived in the water and had "saur" or "saurus" in its name...

We’re predeter x and melgadon

kiikujbuhgbvg

Man, why is everyone saying he said that they’re dinosaurs! He never did! “Sea Dinosaurs” could be a nickname for marine reptiles for him! Ugh… 🤦

THE PAELEONTOLGISTS ARE HAVIG A SEIZURE! YOUR TITLE IS KILLING MY BRAIN HHJHJHJHJH

The shonisaurus is the biggest sea dinosaur

And it’s not even your accent

Please pronounce them correctly

Pleaseasaur lol

I’m sorry I’m commenting as I’m watching the video but couldn’t styxosaurus just swim down?

And not Elasmosaurus

Why is nothosaurus on this list

And pls stop comparing everything to Tyrannosaurus

Since your classifying them by sea dinosaurs why isn’t megalodon on the list

My favorite dinosaur is the golden retriever

Anyways

Is everyone just gonna ignore the fact they are not dinosaurs:/

Everone of the dinosaurs

wow the first one i never heard of but holy im glad they are extinct!!!!! Im glad the Shastasaurus is extinct!

hello fellow autistic people

My favourite is the mosasares

You forgot the Perethon

Bruh bright side this are marine raptiles idoit

Not a single one of these is an actual dinosaur.

Sounds like the story that 5th grader made up. They even know what they ate 250 million years ago. While doctors can’t tell me what food I’m allergic too

The title is very misleading, as none of the animals in this video were dinosaurs. All were reptiles, but not dinosaurs.

Nice and ferocious reptiles and fish

Bro th biggest marine extinction reptile is leedsichths its the size of the elf tower in france

You know these people have at most looked at some inaccurate or outdated documentaries for at most 5 minutes when it says sea dinosaurs and the fact that they call them monsters . Is it just me or do the people they find have the biggest NPC voice you could think of. If you want to learn about creatures that lived long ago don’t watch this watch like E.D.G.E or something.

Me when “sea dinosaurs”:

:/

I love dinosaurs 🦕🦖🦕🦖🌏🌍🌎🥩🥩🥩🍗🍗🍗🍖🍖🍖🥬🥬🥬🥬🥬🥬🥬🍖🍖🍖🍖🍖🍖🍗🍗🍗🍗

Our favourite was the Pliosaurus and the Shastasaurus ❤🎉

pliosauruses" PLIOSAURUS AND NO WAT JOSE NOT TREX

Large marine reptiles were called ‘plesiosaurs’ not dinosaurs.