If just one of these was alive right now, would it live until

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>>2338483
>would it live until death

>>2338483
Only orcas, but they gang-rape it.

How did these things or other sea creatures sleep? The waters seemed more dangerous than land. I'd be sleeping with one eye open.

>>2338483
As >>2338487
said. Not even in their time they had that much of a competition.

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>>2338483
Wrekt

>>2338558
I always have this horrific scenario play in my head when it comes to marine reptiles.

>be in the middle of the ocean
>see a blurry figure in the distance slowly get bigger
>its a mosasaurus
>you can't outswim it but try anyway
>you see it getting closer faster and faster with its jaws wide open
>crunch
>you're dead

Thank God these things don't exist today or else traveling by sea would have been impossible

>>2338483
>would it live until death

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>>2338685
I love sea monster tales
http://cryptomundo.com/bigfoot-report/a-look-back-at-the-1962-pensacola-florida-sea-serpent-incident-3/

https://en.wikipedia.org/wiki/SM_U-28_(Germany)
>On 30 July 1915, U-28 sunk the British steamer Iberian. According to Commander von Forstner's account of the incident, the wreckage remained under the water for about 25 seconds until an explosion sent some of the debris flying up. It is said that along with the debris, a creature described as a "gigantic aquatic animal" resembling a crocodile was seen, which quickly disappeared from sight

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>>2338700
https://en.wikipedia.org/wiki/SS_Iberian_(1900)
>At that moment SM U-28's captain, chief engineer, navigator, helmsman, engineer officer and an able seaman were in the conning tower of the submarine. They all witnessed a crocodile-like creature writhing and struggling 25 metres (82 ft 0 in) high into the sky among the debris of the ship after Iberian's boilers exploded. The crew stated that the aquatic crocodile was about 20 metres (65 ft 7 in) long, with four limbs resembling large webbed feet, a long pointed tail and a head which also tapered to a point. Unfortunately the crew were not able to take a photograph, since the animal sank out of sight after just ten or fifteen seconds

>>2338700
>>2338702
>you will never sea a see monster

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>>2338717
feels bad

>>2338614
Orcas are about 12 meters long, you would literally need some Jurassic World bullshit for that pic to be plausible.

>>2338757
>largest orca ever recorded was 9.8 meters
>average orca size between 7-9 meters
Hmm 12 meters you say?

>>2338558
Most sea animals literally do that.

>>2338772
also mosasaurs were 16-18 feet. so orcas still would be rekt.

>>2338777
18 feet isn't even 6 meters long. If that's true, then aren't Orcas bigger on average?

>>2338483
it would get gangbanged by orcas.

>>2338777
>Mosasaurs where between 1 and about 18m long, with more then half of this length build up by a long slender tail the more famous genera like tylosaurus and mosasaurus where among the biggest species. neither of them had anywhere near the brain capacity of modern Cetacea
>Orcas are 10/11 meter long packhunting killers that are known to attack and hunt way bigger balleen whales, they are probably a major factor in the extinction of the megalodon and are known to be able to learn new hunting methods.

no contest here.

>>2338777
i meant 16-18 metres. my bad.

>>2338800
meg could bite orcas in half, they killed whales the same size all the time

>>2338811
and to add to this, its thought that megs hunted from the sea floor upwards, the way modern great whites do. so they could easily use that tactic on killer whales. one bite would end it all.

>>2338812
>upwards
what do you think the orca's color scheme is for?

>>2338483
mosasaurs aren't what jurassic poop made them out to be.

now certain pliosaurs on the other hand

>>2338814
regardless, meg would have the advantage

>>2338772
Well dip me in shit and call me a dipshit, because I was sure that I have seen that number somewhere.

Anyway at worse it's a 4 meter difference, it would still have to be ridiculously huge to have an almost 10 meter skull (a blue whale's skull is half that size and the largest sea reptiles skulls are even smaller iirc).

>>2338830
Being a factor in something's extinction doesn't only mean killing the extinct animal directly

>>2338867
i agree with that, but majority of anti-meg people love to claim orcas hunted them to extinction. which could not be in any way true, other than maybe a pod biting one and it dying from eventual blood loss

>>2338883
>which could not be in any way true,
>he literally doesn't understand that animals are born small

I love the mentally disabled. So cute.

Can someone explain to me how orcas made megalodon extinct?

>>2338944
It was more climate change and evolution than anything else. The world became colder and warm blooded whales were able to adapt and move to colder climates while Megalodon had to stay in warmer waters. Orcas played some factor in that they could prey on younger Megalodon but also the warm water whales that did stick around. So with the addition of predation before reproductive age and competition, the Megalodon were phased out.

>>2338483
Whale ballz

>>2338889
i love autists who get overly worked up, so cute

>>2339012
>gets rekt
>keeps responding

>>2339038
>has a small benis
>keeps living

>>2338867
>factor
Theory, not fact. And it was implied there was predation by other Megs on their own species as waters cooled and prey species vanished with the rising sea levels that ended the Meg, not killer whales.

>>2338614
That's a liopleurodon, not a mososaur. And they never reached that size.

>>2338800
You don't know that mosasaurs and their large relatives didn't hunt in packs or if they could learn new hunting methods either.

>>2339137
It was a lizard and therefore most probably retarded

I am pretty sure an orca pond would hunt megalodon with at least 98% success rate.
Sharks are dumb and the size difference isnt big enough.
Thanks to the orca's sonar and superior intellect the megalodon would never sneak up on them, they would just gang up on him, eat his fins to immobilize it and then flip him over for an easy picking.
inb4 14 years old who would say otherwise show up.
And even then, with orcas around theres no way a megalodon would ever reach adulthood LOL
Literally the most cucked out of existence shark around

>>2339188
>Thanks to the orca's sonar and superior intellect the megalodon would never sneak up on them
Just like how sharks never eat dolphins, right?

>And even then, with orcas around theres no way a megalodon would ever reach adulthood
This also explains why sharks are currently extinct. With orcas around, they clearly cannot survive.

>>2339191
>This also explains why sharks are currently extinct. With orcas around, they clearly cannot survive.
See you in 20 years anon
Its only the beginning, due to fin hunting and kilelr whale predation on bigger sharks, some shark species have disappeared from their previous major hunting ground in australia and south africa.
go ahead honey, google it

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>>2339191
>comparing dolphin' sonar to the orca's
kek

>>2339188
>orcas
>hunting an apex predator 10 times their own size
Sure thing faggot.

>>2339154
nice meme

>>2339230
>megalodon
>10 times the size of an orca
Why are you even posting on this board, sweetheart?

>>2339188
>an orca pond
>LOL
>calls everybody else 14 year olds

Whatever, like, can u go

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>>2339286
>imblying you arent
there, I just made another typo for you sweety <3
Now go back to jacking off on your megalodon fanfiction website

>>2339285
Were you the fag claiming the average Orca is 11 meters long?

>>2339137
Considering they are basically sea Komodos I'd bet they were solitaire animals.

>>2339294
Nope, but its much closer to the specie's standard than your lowly non-apex predator

nobody cares about your shitty fish anon

>>2339294
>Were you the fag claiming the average Orca is 11 meters long?
He is not, I am tho . No need to be so harsh over a damn mistake, is not like I didn't admit I was wrong or anything >>2338851.

100 Brock Lesnars vs 10 Mosasaurs

Who wins?

>>2339300
>specie's
kek

>>2339346
Brock

>>2338558

For one, the open ocean is pretty barren. Animals obviously live out there but it's rare you'll bump into anything your size that's a problem.

Secondly, and more importantly, animals are often mentally wired very differently then humans. Fish and sharks may have to 'sleep' less of their brain at a time, so they can still swim and wake up if they detect threats but are mostly dormant.

>>2339300
Wrong though, moron.

>>2338483
Megalodon desu

>>2340906
>right now

>>2340908
I know

>>2339775
Sharks sleep one side of their brain at a time, while one side is resting through seep, the other is awake and aware, and so they swim while sleeping

>>2339285
Orcas are the most intelligent marine species ad the apex predator of the oceans, if Mosasaurus was still alive Orcas would adapt their social system for much larger families and hunting groups. No matter the size of the aimal, Orcas can take it down.

>>2341051
>No matter the size of the aimal, Orcas can take it down.
Bull sperm whales say hi.

>>2341061
Whales aren't a threat to Orcas, they have no reason to hunt whales since they can get smaller prey and waste less energy. But if a carnivore large than them was around the story would be diferent, they would adapt out of necessity. Orcas hunt great white sharks for example, in a 1 vs 1 fight between them the GWS certainly can win but they have no chace against a pond of Orcas.

>>2341074
>folded 100,000 times

Orcas vs Godzilla

>>2341074
>whales aren't a threat to Orcas

The "apex predator" of the world's oceans is an adult bull sperm whale. Solitary hunters, they are known to intervene to save other whales from entire pods of Orcas. Unlike Orcas, they're also recorded as having destroyed human whaling ships on at least two occasions.

Orcas are impressive and large pack hunting predators, but they aren't oceanic superman.

>>2338483
Orcas, and that's it. Orcas do stay away of bull sperm whales. But dumb cool lizards are just not that big of a deal. Orcas will kill anything if they want it, it's all about one or two starting a new culture of hunting.

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>>2338685
>Thank God these things don't exist today or else traveling by sea would have been impossible

It would be more dangerous, but who knows if they'd even attack ships. I mean a lot of animals alive today could sink small/medium ships, they just don't.

>>2339767
This desu

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>>2343561

>that absolute glorious feel when, even though everything else is shit and all the animals are boring, you live during the time period when the biggest animals ever to exist are alive right now

>>2343566
...for all we know

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>>2343566

Except part of that picture is wrong. I've seen an orca in Miami and it was much, much smaller and slimmer. It was practically dainty. It was barely bigger than a moo-cow. Orcas IRL are much tinyer and dinkier than you see on TV. I imagine the babies are no bigger than a dolphin.

>>2339045
fug :DDD

>>2339196
>Orcas
>Not dolphins
Found the dipshit

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>driving a snowmobile over frozen ocean 50 million years in the future
>this fucker erupts from under the ice and swallows you whole

what do?

>>2345611
Nothing, seeing as every part of its anatomy directly works against breaking through ice.

>>2345611
Why is it that I just heard of this creature?

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>>2339346

>>2345725

You've just shown your IQ level

>>2345611
What would cause something that size to care about eating something that small? It wouldn't be worth the energy expenditure

>>2345797
>mentally cataloguing species is indicative of iq

austism.

>>2345725
because it don't real

>>2345807
it's 50 million years in the future. logic no longer applies

>>2339137
If they were intelligent packhunters, then why would they need to be so much bigger than orcas when the prey of both would've been around the same size?

>>2338483
IIRC they weren't very fast swimmers, they would probably get fucked up by most other modern large oceanic predators.

>>2347427
>why would they need to be so much bigger than orcas when the prey of both would've been around the same size?
you're thinking backwards.

smaller preys produce larger predators. What do blue whales prey on? What do sperm whales hunt? See, smaller prey=larger predator most of the time.

Mosasaurs preyed on relatively tiny animals.

Ya know.

I wonder what kind of colossal fossils researchers could find of giant prehistoric aquatic animals at the bottom of the ocean.

There must be such a ridiculous array of fossils buried deep in the depths that may not be examined for millennia.

It insatiably tingles my adventurous bones.

>>2347748
But blue whales and sperm whales don't hunt in packs. And sperm whales hunt prey ranging from a similar size to relatively small but still decently large (mid sized cephalopods and fish).

>>2345611
I'm pretty sure that an animal that big could never feasibly survive in earths gravity.

>>2347759
>But blue whales and sperm whales don't hunt in packs.
don't they?
>(mid sized cephalopods and fish)
this is essentially what mosasaurs are known to have hunted. Ammonites are the most common mosasaur prey we find.

>>2341046
This is how dolphins sleep as well. But while Sharks have to keep swimming to move water through their gills, Dolphins have to keep their blowhole at the surface to breathe. Sleeping dolphins just float around in circles sleeping half their brain at a time.

>>2346191
you've just shown your IQ level

>orcas
what's their endgame?

>>2343707
The one you saw could have been a different type of killer whale
https://en.wikipedia.org/wiki/Killer_whale#Types

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>>2345611
>That fucked up Linnaeus nomenclature

>>2345725
Because you don't browse the SpecBio threads too much.

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>>2338483
>would it live until death

>>2347936
What threads?

And what started this meglodon vs orca autism

>>2338830
A meg would have the advantage of an orca, yes.

Orcas do not often swim alone, however.

>>2338883
>other than maybe a pod biting one and it dying from eventual blood loss

The way dolphins and porpoises kill sharks of unusual size is actually that they head-butt their gills, causing them to suffocate once the gills are too damaged to work properly. At the risk of Doomguy'ing things up in here, Megalodons are huge. That means that have huge gills, which make for easier targets.

>>2347766
Blue whales don't hunt at all. They swim through seas that are lousy with krill. They graze more than anything.

Sperm whales are solitary predators from what we know about them. Now that's not to say that if two sperm whales encounter the same squid or octopus or whatever they won't both attack it, but the point is that there isn't active coordination between the two the way there is with pack hunters.

>>2338483
I'm pretty sure it would live until its death.

>>2343561
Why is Leedsichthys so happy?

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>>2348027

>>2348022
Speculative Biology threads on this board, Basically threads about posting fictional what-ifs about future Earth life and alien life, sometimes with OC included. And that one is a recurrent one for what I know.

>>2348122
Thanks

>>2348042

it never had to live around orcas

How do you think these things sounded when they roared?

>>2352257
RRRRRRRRRRRRRRAAAAAAAAAAAAAWWWWWblurpgurbleblurbblurgaglarg

>>2338483

a chinese fella might get it

>>2338614
There are so many things wrog with this picture, it's invalid. First the Orca is alone, they hardly are alone, the one in this picture was attackig a seal on a shore, it knew there was no danger for her, if there was the Orca wouldn't expose itself that way. They are one of the most intelliget creatures on Earth.
Plus that Dinosaur is too big to be on a shora that way, it would be stranded...

Fact is that Orcas live and hunt in groups, they hunt Great white sharks for god's sake, they hunt sharks by exploiting its weakness, they turn the shark upside down.

>>2339137
If they could they wouldn't have gone extinct. They were not pack animals, I haven't seen a single source saying they were. Trying to compare the intelligence of a Orca and a dinosaur is simply absurd

>>2354293
Mosasaurus wasn't a dinosaur you fucking moron. Count on the navel gazers of /an/ to mindlessly and fruitlessly speculate on creatures they don't even know the phylogeny of.

>>2341074
there are Orcas posting on this board right now

>>2348032
both travel in pods.

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>>2338487
>>2338483
>>2338800
Granted this pic is of Tylosaurus a more gracile Mosasaur compared to Mosasaurus, I gotta go with a Mosasaurus in a 1v1, they have found a Mosasaur skull crushed by the immense jaw pressure of a fellow Mosasaur neck vertebra broken too as the larger one thrashed it about.

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>>2338483
Maybe not once it is full-grown, but they would just go extinct all over again because they cannot compete with modern cetaceans and the lack of their usual prey. They would need to somehow fill a niche which is not already taken.

Interesting fact: Mosasaurs are not dinosaurs (archosauria), but are true lizards (lepidosauria).

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>>2347752
>I wonder what kind of colossal fossils researchers could find of giant prehistoric aquatic animals at the bottom of the ocean.

Good question.

Tectonic plates grow from mid-ocean ridges as magma upwells and cools into rock. Subduction zones along the continental shelf swallow the oceanic crust and it is absorbed back into the mantle. Most of the oceanic seabed is younger than 150 million years old and we'll never know anything about the ocean depths before the Cretaceous beyond that which we can glean from areas where the coast seabed rose to form part of a continental landmass (ie: Burgess Shale).

I find it likely that there were larger marine animals than Mosasaur (or just larger Mosasaurs). The Mosasaur specimens we have were all taken from areas that would have been coastal waters- I don't think this necessarily means they were coastal animals, but like Killer Whales were clearly very prolific and it would make sense that they'd be so well represented in the fossil record. There is fucking gigantic amount of prehistoric seabed that isn't accounted for.

With that said, I think there are further ecological precedents to believe that larger sea-dwelling animals may have existed. First of all, there is nothing filling the ecological niche of feeding on Plankton in the way that modern baleen whales do. Thinking Mosasaurs were the biggest marine animals of the Cretaceous would sort of be like thinking Killer Whales are the biggest marine animals today.

Secondly, it doesn't follow that the largest marine animals would be smaller than the largest terrestrial animals. From a physics standpoint, marine animals can grow large much more easily because much of their weight is carried by their buoyancy rather than having to rely upon their bone structure to move around. Plankton as a base food source allows marine life to grow larger than terrestrial animals simply because plankton feeders can graze vast quantities of protein- there is no terrestrial analogue.

>>2356463

The blue whale is truly magnificent and terrifying at the same time.
I hope that one day i'll be able to see this beautiful creature in person.