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Top 20 Most Incredible Prehistoric Sea Monsters

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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! What's YOUR favorite prehistoric sea monster? Let us know in the comments!
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#SeaMonsters #Prehistoric #Scary

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17 авг 2024

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Комментарии : 578

@WatchMojo 3 года назад

Would you want them to bring back any of these sea creatures... or glad they are left in the past?

@antman3934 3 года назад

Forth

@shushi_shann7257 3 года назад

3RD

@antman3934 3 года назад

@sircuencathomas done

@yesterday8738 3 года назад

Nope to dangerous

@Ziselaer 3 года назад

Wait this was commented 2 days ago?

@mr.decencykeepinitreal6348 3 года назад

Megalodon is such a terrifying but also impressive prehistoric sea creature.

@No_one-impor_tant 3 года назад

I too like the giant shark

@transquelaag 3 года назад

It's literally just a big shark

@Whatacomedian_ 3 года назад

Makes you wonder how big their food source was.

@RFFVNS 3 года назад

@@LiveAtEs I feel like you would feel differently if you had to encounter a megalodon

@Ethan-bt4zw 3 года назад

They aren’t real tho.

@cookscreativecorner 3 года назад

So glad to see a couple of obscure ones on here. My favorites are the Megalodon, Liopleurodon, Livyatan, Dunkleosteus, and Kronosaurus. Now this reminds me I really need to reread the Meg series soon.

@calebk9111 3 года назад

"Obscure"

@cookscreativecorner 3 года назад

@@calebk9111 A few f them are. We all know the Megalodon and Pliosaurs, but not everyone knows the Livyatan or some of the others here.

@ShardZilla 2 года назад

@@cookscreativecorner Was Livyatan that one sea creature who was bigger than the aquatic squamate Mosasaurus?

@MegaJSK123 3 года назад

Is it just me, or is Cretoxyrhina one of the most badass names you've ever heard!

@ThePrinceofHisOwnKingdom 3 года назад

Sounds like a medicine.

@mechasaurus 3 года назад

More like the most venomous.

@jayadesai3954 3 года назад

It is indeed , badass

@OrcaBoi-ju4xh 3 года назад

more tike its toxic. creTOXYrhina.

@G-S1990 2 года назад

It's just you.

@akatsukijutsu545 3 года назад

Turned my phone on saw watchmojo and sea creatures and was like yep I'm watching it lol

@WatchMojo 3 года назад

Glad it interests you!

@Lloveu264 3 года назад

We only know 5% of the ocean tell me again that these things aren’t still out there.

@WatchMojo 3 года назад

spooky

@MaegnasMw 3 года назад

Of course they are and you should never go near water again!

@Janneth85C 3 года назад

@@WatchMojo they are still there you just don t know

@beserker9890 3 года назад

@@Janneth85C a baseless claim.

@punkrock1989 3 года назад

@@Janneth85C neither do u sooooo

@charfree6888 3 года назад

People are looking for the Kraken but the Kraken is away looking for the manager.

@9051team 3 года назад

Other sea monsters: uuuggghh it's kraken ....

@magicrabbit9446 3 года назад

So krakens are the water version of a karen which sounds funny

@lightfurya2087 3 года назад

Lol

@YOOOOWHATT 3 года назад

Cavepeople trying to take a swim: 👀

@charfree6888 3 года назад

That term is politically incorrect and insensitive. The right term is Rock- Hole Men. Ahaha

@jayadesai3954 3 года назад

Nightmares all night long

@YOOOOWHATT 3 года назад

👀 T F

@jacklucca2037 3 года назад

There were no advanced humanoids living in the same epoch as any of these creatures.

@OrcaBoi-ju4xh 2 года назад

@@jacklucca2037 yes, megalodon died before humans came

@Bdawg9891 3 года назад

Elasmosaurus showed up. He wants his tree fiddy.

@DRaKe6900 3 года назад

Bryan Landry god damn Loch Ness Monster I ain’t giving you no god damn tree fiddy!!!

@Historicutuber 3 года назад

hahah good one!

@lannce516 3 года назад

“Many fearsome fish have swam the worlds oceans” WOW YOU DONT SAY

@mariuskristensen1867 3 года назад

Brr the ocean is scary man

@shatteredthunder 3 года назад

It’s a magical Liopleurodon, Charlie! It’s gonna guide our way to Candy Mountain!

@Lional 3 года назад

Damn, I was just gonna comment this 🤣🤣

@mariuskristensen1867 3 года назад

Umm yea i don't think so i think he will eath you

@jondeiconic2552 3 года назад

Yup prehistoric sea area are dangerous before with many types of sea creatures

@Isiah59 3 года назад

Please do more prehistoric creatures, and more dinosaurs too!‼️🦕

@dragonslayergod 3 года назад

People saying ooh megalodon come back like the size it was I would love to see megalodon come back and try to survive in today's climate

@jupitersmoon3033 3 года назад

God, imagine how many people would try to hunt them like they did with whales?

@bobusan_duuuugnut-oh 3 года назад

The liopleurodon is magical creature. Just ask Charlie.

@langux6552 3 года назад

Fun fact : In Switzerland it is illegal to own just one guinea pig.

@CrazyIshan69 3 года назад

Why?

@ambermarielewis9353 3 года назад

Well I’m glad I have two. But I live in the uk

@saurianakanyansaber3900 3 года назад

Ishan a.k.a Shall-I Guini Pigs are very social creatures and easily get depressed when alone, that’s why.

@CrazyIshan69 3 года назад

@@saurianakanyansaber3900 Oh. I misinterpreted your comment as "illegal to own even one ginuea pig".

@jeremyblackwater439 3 года назад

Ishan a.k.a Shall-I me too😂

@wixdraco151 3 года назад

“It’s a Liopleurodon, Charlie! A Liopleurodon!”

@shainewhite2781 3 года назад

I love giant prehistoric sea reptiles! Been fascinated by them since Disney's Fantastia the Rite Of Spring Sequence. And Walking With Dinosaurs as well as Chased By Sea Monsters.

@AifDaimon 3 года назад

That Moana reference during the Mauisaurus entry just couldn't be helped, could it!? HAHAHAHHAHAHAHAHAHA

@hannahlowe794 Год назад

I thought the same thing.

@predator4375 3 года назад

Some of these are nightmare fuel

@SonyEnthusiast 3 года назад

To you

@jayku1624 3 года назад

Reginald Andrews well yo be fair horror itself is taken from the past and using fears to make them so having creatures that kill you faster than you blink Thad be perfect

@maxmazzotti6651 3 года назад

My favorite on the list is liopleurodon

@CrazyIshan69 3 года назад

@@maxmazzotti6651 Mine is Livyatan, not because it was number 1 (I thought Megalodon would take the cake).

@slifer549_yt3 3 года назад

I like the well deserved exposure you guys are giving these extinct animals, and the history lesson as well. I hope to see more of these kinds of videos

@mr.decencykeepinitreal6348 3 года назад

14:17 That famous movie line never gets old.

@r_i_t_h_u4256 3 года назад

2:54 come on that's just a crocodile

@SonyEnthusiast 3 года назад

Yea a bigger one

@shainewhite2781 3 года назад

12:24, love the Mosasaurus! The Jurassic world Version is 89 feet, while it's real life counterpart was only 60 feet in length. But.. I stick with the JW Mosasaurus.

@endoftheworld29 3 года назад

JW created their version through cloning and who knows of they altered some of the Dino's to grow bigger than its original counter part. Hell they even created a new specie by combining multiple Dino DNA's.

@jacklucca2037 3 года назад

Let me guess, you think that the mosasaurus can beat the megalodon?

@sharksarecooI 5 месяцев назад

The ABSOLUTE BIGGEST mosasaur was almost 60 feet, on average they could reach lengths up to 50 feet and btw, the megalodon would absolutely obliterate this thing.

@charfree6888 3 года назад

10:22 Rebecca sang. She sang. She...

@charfree6888 3 года назад

4:25 do u know why the Stethacanthus hunted so well? Have u check under its chef's hat?

@zooemperor3954 3 года назад

Liopleurodon, Kronosaurus, Pliosaurus, Tylosaurus, Cretoxyrhina and Livyatan are my top favorites on the list.

@7passionstar 3 года назад

Great subject. Would have been lovely if you'd given the length of ALL the monsters. Thank you!

@J2ojuiced95 3 года назад

It’s a good thing these are all extinct otherwise going underwater in the worlds ocean’s would be a no go.

@jeremyblackwater439 3 года назад

Yeah it’s still a no go for me... do enjoy though 😃

@littlecharizard426 3 года назад

Hi Pikachu

@Feja2503 3 года назад

Funnily enough, a lot of our predators are more dangerous to us than any of those. They do look scary though. Boats would have a lot more issues.

@TheZiiFamily 3 года назад

Oh a pikachu! im not sure if you have an owner or not

@KazKen87 3 года назад

I really love your random lists. But could you guys perhaps just add the metric system as well to your videos? Because when you say that something is 65 feet long, I have to pause the video and google how many meters 65 feet is. Other than that, I love your videos. Keep up the great work.

@goatrex9195 3 года назад

My list 1: Livyatan 2: Megalodon 3: Predator X 4: Mosasaurus 5: Tylosaurus 6: Basilosaurus 7: Liopleurodon 8: Dunkleosteus 9: Helicoprion 10: Triassic Kraken

@jacklucca2037 3 года назад

Wtf is a ‘’triassic kraken”?

@maxvt7258 Год назад

Nice list! My list is: 6. Jaekeloptereus 5. Liopleurodon 4. Dunkleosteus 3. Basilosaurus 2. Megalodon 1. All Mosasaurs but mainly Tylosaurus

@sharksarecooI 5 месяцев назад

Megalodon was faster, bigger and had more powerful bite than the livyatan and megalodon would usually go for the flippers when attacking whales so livyatan wouldn’t stand a chance

@shreyasdighe2587 2 года назад

I think Mosasaurus should have been on the top spot

@TaskForce_911 3 года назад

I actually have a Big Encyclopedia at Home. So, I actually know most of these creatures.

@jayadesai3954 3 года назад

I too have 😀

@rxg9er 3 года назад

I love the Leviathan Whale as much as the next guy, but Megalodon survived for longer and so should be #1

@cadillacdeville5828 3 года назад

I ALWAYS liked list like this 🙂. Thanks Watch Mojo ☺️

@fossildiggerstudios4645 3 года назад

It’s funny, I just got done watching the Sea Monsters WWD specials

@venusdarma 3 года назад

where is kraken?

@rezkydonnyputranto4232 3 года назад

Becaue, Kraken isnt confirmed exist yet?

@jakealter5504 3 года назад

Probably being eaten by some of the critters on this list

@CrazyIshan69 3 года назад

In mythology.

@alexandramercure 3 года назад

This is why I hate the water

@nathanstrother7593 Месяц назад

What's even more terrifying is that it's possible one of these sea monsters may still be alive today which would explain the mysteries surrounding the bloop not to mention the story of how Coelacanth was rediscovered makes it even more terrifying

@georges2842 3 года назад

"The Mauisaurus is named for the demigod Maui of Polynesian myth, because it was discovered in Oceana. ... I don't get it, either."

@jeremyblackwater439 3 года назад

This is probably one of the most fun topics mojo covers

@mechasaurus 3 года назад

We need these beasts in a time-travel DLC for MANEATER

@pheonixfire9517 3 года назад

Just Defender there is a game called Time travel VR and it has some of these creatures in it. Oh boy, you feel kinda scared when playing it

@magicrabbit9446 3 года назад

Watchmojo has helped me find shows or movies that a lot e interesting, and a great place to learn new things

@Tyranitar66501 3 года назад

From the creators that bought "Top 10 Easiest Musical Instruments"

@WatchMojo 3 года назад

LOL, helped you did it?

@davidtierney7941 3 года назад

Wanna know what makes Dakosarus even scarier? It’s nickname is Godzilla

@lorikeller6003 3 года назад

I saw a prehistoric monster once No really It took three times to flush it

@charfree6888 3 года назад

*God during the prehistoric era: I think I play too much. Lemme yeet these beasts.*

@Ruthlessbone 3 года назад

Lmao! In that era he had too much time.

@dumbdolphin5525 3 года назад

Or maybe too much drink for some millions of years

@megalon73 3 года назад

When, Luvyatan Melvillei. got number the number 1 spot! I was like, "Who the hell beats Megalodon. at the Stop and lord behold. A giant prehistoric Sperm Whale. Or as I like describe it as a Sea GOD of the Ocean.

@jacklucca2037 3 года назад

Well, it doesn’t mean that it was better adapted than the Meg. The Meg died out 10 million years after the livyatan did.

@maybenaught 3 года назад

11:22 magical liopleurodon~, charlie~!

@TheOriginalMasterOogway 3 года назад

5% of the ocean has been explored, it's scary to think some of these creatures could possibly still be alive and in the ocean somewhere, we can never be 100% sure that they're extinct, I believe there's still a megalodon out there somewhere

@jacklucca2037 3 года назад

If you think any of these animals are still around today, we would still have some younger specimens in the fossil record. So it’s unlikely that it’s still around.

@TheOriginalMasterOogway 3 года назад

@@jacklucca2037 but yet it's still possible which is literally the whole point of what I said, it's a possibility, no one can be 100% certain

@space_ace_1 3 года назад

“Bugs don’t get this big today” you’ve clearly never been to Australia

@magicrabbit9446 3 года назад

Your right, but my pastor who is from California moved to kansas said that he didnt velieve how big the bugs here are compared to the ones hes seen

@garethtudor836 3 года назад

First off, it was great seeing Kallie Moore in the clip at number twenty. Love Eons! I'm wondering how people would react when they found out that the closest living relatives of mosasaurs are monitors. Think aquatic Komodo dragons...

@oddiunapologetic 3 года назад

Watchmojo reminding me that I haven't played hungry shark in while.

@gamingvitamin8948 3 года назад

Gave me the same feeling time to eat some fishes (and other eatable creatures)with a shark(or see monster)

@cakes3958 3 года назад

I want to see real footage

@techh9171 3 года назад

Lmao

@TheLadiGigi 3 года назад

Alright. Just hop in my TARDIS and have your camera ready.

@jarrettreboton4661 3 года назад

Prehistoric creatures always get the apple of my eye.

@davidtierney7941 3 года назад

Dakosaurus goes Daka Daka Daka

@pixilixy 3 года назад

I want more on Hallucigenia! That one looked insane

@ayush885 2 года назад

14:57 Fun fact, hallucigenia cannot move backwards, it only moves forwards until all it's enemies are destroyed.

@No_one-impor_tant 3 года назад

“25-69 ft long” JESUS, also nice

@glen68326 3 года назад

The singing part was AWESOME!!! Love it!!

@Alice-ej1wn 3 года назад

Kinda bummed spinosaurus wasn't even mentioned, we all know they're a good swimmer yes but apparently scientists thought it could actually be a sea creature that was capable of coming on land Obviously don't take what I've seen 100% truthful but eerrr yeah, Spino is damn terrifying anyway

@jacklucca2037 3 года назад

Underrated comment

@knightofarkronia8652 2 года назад

I think they were trying to avoid dinosaurs for this list.

@Whatareyoudoinginmyswamp. Год назад

So incredible :)

@KRENxOFxEVIL 3 года назад

Stethacanthus and its anvil dorsal fin would have complemented the Hammerhead shark had its species still lived today.

@xBloodxFangx 3 года назад

Calling them marine reptiles instead of aquatic dinosaurs. That's how you get a thumbs up in my book

@shainewhite2781 3 года назад

14:04, been obsessed with Megalodon since 1999 when I saw it on a Discovery Channel documentary.

@JoeDobbs 3 года назад

A part of me got happy that you guys showed walking with monsters for a clip, I had those videos and loved them, so thanks for bringing back a piece of my childhood

@LBL__nayanboss4427 Год назад

Which country

@JoeDobbs Год назад

@@LBL__nayanboss4427 why?

@LBL__nayanboss4427 Год назад

@@JoeDobbsbecause I dont know

@LBL__nayanboss4427 Год назад

@@JoeDobbs tell me bro your from which country

@JoeDobbs Год назад

@@LBL__nayanboss4427 the US?

@exibitions 3 года назад

The magical Liopleurodon!

@NaturesBestPal_YT 2 года назад

I think the most incredible sea monster is the Titanoboa. It is basically a MASSIVE SNAKE! It spent most of its time in the water.

@farkanr3662 3 года назад

Very informative. Thanku so much Watch mojo

@whiteloudd4274 3 года назад

Finally you guy are getting back to your roots 🌲

@vanaals 3 года назад

I have to wonder just how helicoprion managed to get food down into its gullet. Judging, at least, by the way its been envisioned, it could readily bite their prey in half. But getting the pieces past the tooth disc and into their mouths looks to be a more difficult task. I can only think that we haven't yet gotten it right.

@LBL__nayanboss4427 Год назад

Which country?

@clementineschalchen330 3 года назад

The most terrifying of them all is my dad.

@jacklucca2037 3 года назад

Is he aquatic?😂

@Neat0_o 3 года назад

Ahhh I list of my greatest fears. Water, and unseeable monsters. Awesome

@jackiesantos2121 3 года назад

The Earth was crawling with Prehistoric monsters like these sea monster do it exist

@mietitore1823 3 года назад

I was really hoping to see Xiphactinus. And it’s a mean lookin fish that would have made the Tigerfish look weak. This fish live in the late Cretaceous. Or even the Leedsichthys, which was a large fish.

@lilattacker4461 3 года назад

Xiphactinus should have definitely been a honorable mention but leedsicthys shouldn't, its like today's baleen whales and whale sharks. Hell I would even go as far to say that I wished they were still alive in present day.

@eIcucuy 2 года назад

leedsichthys is a filter feeder it isn't dangerous a stethacanthus could beat it

@MinixGoth 3 года назад

I was about to go to bed but I couldn't resist as soon as I saw the title.

@michaellykke100 Год назад

I will subscribe, as soon as you guys start recognizing the metric and other European measures. ❤️

@Megalon-qc8pf 3 года назад

One where the Meg isn’t number 1. Still sad anomolcaris is a honorable mention

@maxvt7258 Год назад

I love them! My favorites are the Mosasaurs, however espicially the Tylosaurus Proriger. The Mosasaurs will always remain my favorite animals of all time. They are special. Close second is Megalodon btw. And i'm glad to see the Tylosaurus on this list!