you wouldn’t want to meet these beasts
in a dark alley
never mind the bottom of the ocean
welcome to watchmojo.com and today we’re
counting down our picks for the top ten
terrifying prehistoric sea monsters
before we begin we publish new videos
every day
so be sure to subscribe for more great
content for this list will be ranking
the most fearsome and frightening
creatures that once roamed the depths of
the prehistoric sea
jaws may have made you afraid to get
back in the water but these giant
extinct beasts could give you nightmares
for weeks you’re gonna need a bigger
boat
number 10 elasmosaurus the first sea
monster on our list hails from the
family of pleaseö sores
marine reptiles that were known for
their wide bodies and long extended mix
the elasmosaurus was an extremely large
variation of a Plesiosaurus that lived
primarily during the Late Cretaceous
period of evolution so long was the neck
on this variation that in the last mass
horas was rarely able to raise its head
above water for any extended period of
time instead this slow swimming sea
monster preferred to stock its prey from
below often springing upon schools of
fish while concealed beneath the deep
and dark ocean waves
[Music]
what is that number nine daca Soros if
you’re looking for a clue as to what the
temperament of the daca source was like
when this extinct carnivore roamed the
Jurassic and Cretaceous oceans then just
look at what its name means in English
spider lizard the data source possessed
rows of sharp and serrated teeth that
made good upon this title giving this
beast a jaw structure similar to that of
a killer whale as a result many marine
biologists believe the data source to be
one of the apex predators of its day
ripping and tearing chunks out of just
about anything that was unfortunate
enough to be caught within its jaws
number eight cretoxyrhina sharks when
the oldest creatures on the planet from
a time when the world was just flesh
look out mako sharks and back off
hammerheads for this prehistoric shark
was one of the biggest and baddest
beasts during the Cretaceous period
fossil of cretoxyrhina were first
discovered during the mid-1800s and
provide images of a fearsome and
frightening species of shark that earned
its nickname of Ginsu shark thanks to
its mouthful of razor-sharp teeth
cretoxyrhina was one of if not the
largest predatory shark of its time with
very few natural predators to its name
indeed giant marine reptiles and other
sea creatures of all kinds fell victim
to this efficient killing machine
essentially placing cretoxyrhina at the
very top of the food chain during its
time on earth number 7 shasta soros have
you ever wondered which species of
marine lizard was the biggest of the big
well then look no further than the
shasta Saurus which exists today as the
largest discovered marine reptile on
record the shasta Saurus hails from the
family of reptiles known as Ixia sores
and were toothless beasts who rarely
delved into extremely deep water
preferring instead to feed closer to the
surface one can only imagine what it was
like to behold the sight of this
creature in the flesh as the shabath
orange from 25 to 69 feet long depending
on the seafood in other words watch out
number six basilosaurus although the
suffix to this next creature implies
that the basilosaurus was a reptile
further research has actually proven it
to be a prehistoric species of whale
nevertheless the name stuck and probably
for the best
as basilosaurus possesses a frightening
looks far different than many of its
modern cousins
maybe it’s the creatures long snout full
of sharp teeth or the slithering LS
quality to its physique or maybe it’s
the fact that basilosaurus was fond of
chomping down upon the skulls of its
prey with amazingly impressive force
crushing bone and chewing up flesh with
the greatest of ease whichever reason
you choose basilosaurus wins almost
every time number 5 tylosaurus it was
during the twilight years of the
cretaceous period when a marine lizard
species known as mosasaur took hold as
one of the most common hunters of the
era tylosaurus serves as one of the most
frightening examples of these mosasaurs
thanks to its incredible size and
fiercely aggressive nature to
accommodate its many faiths its voted an
extra set of teeth in the roof of its
mouth
the creatures long rounded snout was
often used as a battering ram of sorts
during battle with the tylosaurus
serving as the sort of equal opportunity
predator which fed upon burrs fish and
sharks alike they typically hunted in
shallow waters and were not beyond
leaping above the waves to catch a
low-flying or flightless bird or two
with the tylosaurus toothy grin likely
serving as the preys last frightful
sight before death number 4 pliosaurus
fungi also known as predator X twice as
big as most Jurassic ocean predators
[Music]
this is predator x 2006 signified the
fossilized discovery of a new species of
marine lizard one that was nicknamed
Predator X the remains placed predator
acts in the family of Playa sores
extremely large predatory lizards that
thrived in European and South American
waters during the late Jurassic period
given the taxonomic name pliosaurus funk
I in 2012 it was one of the largest
pliosaurus on record with artists
renderings painting a frightening
portrait of a large headed razor tooth
monster that likely prowled the icy
waters off the coast of Scandinavia in
2008 in an island and the High Arctic a
fossil was dug out of the frozen enough
its skull alone was nearly twice that of
t-rex
although the remains of Predator X are
partial and don’t create a complete
portrait of what this monster looked
like the images of this muscular sea
killer remain a scary sight indeed
number 3 Mosasaurus
[Applause]
we’ve already mentioned the tylosaurus
is one of the scariest examples from the
prehistoric mosasaur family but what
about it’s even bigger and better cousin
the Mosasaurus the beasts appearance
almost looks like something out of
Jurassic Park with its large eyes
pointed snout and huge teeth giving it a
nightmarish and monstrous appearance the
Mosasaurus didn’t possess incredible
eyesight however and didn’t often delve
too deep when looking for fruit instead
these creatures took to shallow waters
for their prey attacking smaller fish
turtles and mollusks
with ruthless and relentless precision
number two Liopleurodon the next sea
monster on our list may possess a name
that translates to smooth sided teeth
but there is nothing easy or relaxed
about the Liopleurodon indeed there was
little that could stand up against this
apex predator that prowled European
waters during the Jurassic period thanks
to Liopleurodon no-nonsense capacity for
killing the Liopleurodon was a strong
propulsive swimmer and likely pounced
upon its prey with an ambush type
approach probably striking before any
form of fray knew what hit them
one specific species of Liopleurodon
known as el faro ox has even been
measured at over 20 feet making this sea
monster the stuff of which all bad
dreams are made life Lordan at 150
tonnes it is the largest and most
powerful carnivore ever to live on the
planet before we haunt those dreams with
our number1 sea creature here are some
honorable mentions number 1 Megalodon
[Applause]
oh it’s name means big tooth and with
good reason
as the prehistoric sea monster known as
the Megalodon was one of the most iconic
and frightening species of shark to ever
roam the earth likely an historical
counterpoint for the sharknado movie
series this beast was feared for its
near mythological level of kill
potential so strong and impactful was
Megalodon upon its local aquatic
communities that entire ecosystems could
be affected by how this apex predator
chose to hunt its food indeed both the
great white and mako sharks oh this
primordial beast a debt for their own
fearsome pedigree with the Megalodon
serving as the og of prehistoric sharks
badasses do you agree with our pics
check out these other great clips from
WatchMojo and subscribe for new videos
every day
[Music]
in a dark alley
never mind the bottom of the ocean
welcome to watchmojo.com and today we’re
counting down our picks for the top ten
terrifying prehistoric sea monsters
before we begin we publish new videos
every day
so be sure to subscribe for more great
content for this list will be ranking
the most fearsome and frightening
creatures that once roamed the depths of
the prehistoric sea
jaws may have made you afraid to get
back in the water but these giant
extinct beasts could give you nightmares
for weeks you’re gonna need a bigger
boat
number 10 elasmosaurus the first sea
monster on our list hails from the
family of pleaseö sores
marine reptiles that were known for
their wide bodies and long extended mix
the elasmosaurus was an extremely large
variation of a Plesiosaurus that lived
primarily during the Late Cretaceous
period of evolution so long was the neck
on this variation that in the last mass
horas was rarely able to raise its head
above water for any extended period of
time instead this slow swimming sea
monster preferred to stock its prey from
below often springing upon schools of
fish while concealed beneath the deep
and dark ocean waves
[Music]
what is that number nine daca Soros if
you’re looking for a clue as to what the
temperament of the daca source was like
when this extinct carnivore roamed the
Jurassic and Cretaceous oceans then just
look at what its name means in English
spider lizard the data source possessed
rows of sharp and serrated teeth that
made good upon this title giving this
beast a jaw structure similar to that of
a killer whale as a result many marine
biologists believe the data source to be
one of the apex predators of its day
ripping and tearing chunks out of just
about anything that was unfortunate
enough to be caught within its jaws
number eight cretoxyrhina sharks when
the oldest creatures on the planet from
a time when the world was just flesh
look out mako sharks and back off
hammerheads for this prehistoric shark
was one of the biggest and baddest
beasts during the Cretaceous period
fossil of cretoxyrhina were first
discovered during the mid-1800s and
provide images of a fearsome and
frightening species of shark that earned
its nickname of Ginsu shark thanks to
its mouthful of razor-sharp teeth
cretoxyrhina was one of if not the
largest predatory shark of its time with
very few natural predators to its name
indeed giant marine reptiles and other
sea creatures of all kinds fell victim
to this efficient killing machine
essentially placing cretoxyrhina at the
very top of the food chain during its
time on earth number 7 shasta soros have
you ever wondered which species of
marine lizard was the biggest of the big
well then look no further than the
shasta Saurus which exists today as the
largest discovered marine reptile on
record the shasta Saurus hails from the
family of reptiles known as Ixia sores
and were toothless beasts who rarely
delved into extremely deep water
preferring instead to feed closer to the
surface one can only imagine what it was
like to behold the sight of this
creature in the flesh as the shabath
orange from 25 to 69 feet long depending
on the seafood in other words watch out
number six basilosaurus although the
suffix to this next creature implies
that the basilosaurus was a reptile
further research has actually proven it
to be a prehistoric species of whale
nevertheless the name stuck and probably
for the best
as basilosaurus possesses a frightening
looks far different than many of its
modern cousins
maybe it’s the creatures long snout full
of sharp teeth or the slithering LS
quality to its physique or maybe it’s
the fact that basilosaurus was fond of
chomping down upon the skulls of its
prey with amazingly impressive force
crushing bone and chewing up flesh with
the greatest of ease whichever reason
you choose basilosaurus wins almost
every time number 5 tylosaurus it was
during the twilight years of the
cretaceous period when a marine lizard
species known as mosasaur took hold as
one of the most common hunters of the
era tylosaurus serves as one of the most
frightening examples of these mosasaurs
thanks to its incredible size and
fiercely aggressive nature to
accommodate its many faiths its voted an
extra set of teeth in the roof of its
mouth
the creatures long rounded snout was
often used as a battering ram of sorts
during battle with the tylosaurus
serving as the sort of equal opportunity
predator which fed upon burrs fish and
sharks alike they typically hunted in
shallow waters and were not beyond
leaping above the waves to catch a
low-flying or flightless bird or two
with the tylosaurus toothy grin likely
serving as the preys last frightful
sight before death number 4 pliosaurus
fungi also known as predator X twice as
big as most Jurassic ocean predators
[Music]
this is predator x 2006 signified the
fossilized discovery of a new species of
marine lizard one that was nicknamed
Predator X the remains placed predator
acts in the family of Playa sores
extremely large predatory lizards that
thrived in European and South American
waters during the late Jurassic period
given the taxonomic name pliosaurus funk
I in 2012 it was one of the largest
pliosaurus on record with artists
renderings painting a frightening
portrait of a large headed razor tooth
monster that likely prowled the icy
waters off the coast of Scandinavia in
2008 in an island and the High Arctic a
fossil was dug out of the frozen enough
its skull alone was nearly twice that of
t-rex
although the remains of Predator X are
partial and don’t create a complete
portrait of what this monster looked
like the images of this muscular sea
killer remain a scary sight indeed
number 3 Mosasaurus
[Applause]
we’ve already mentioned the tylosaurus
is one of the scariest examples from the
prehistoric mosasaur family but what
about it’s even bigger and better cousin
the Mosasaurus the beasts appearance
almost looks like something out of
Jurassic Park with its large eyes
pointed snout and huge teeth giving it a
nightmarish and monstrous appearance the
Mosasaurus didn’t possess incredible
eyesight however and didn’t often delve
too deep when looking for fruit instead
these creatures took to shallow waters
for their prey attacking smaller fish
turtles and mollusks
with ruthless and relentless precision
number two Liopleurodon the next sea
monster on our list may possess a name
that translates to smooth sided teeth
but there is nothing easy or relaxed
about the Liopleurodon indeed there was
little that could stand up against this
apex predator that prowled European
waters during the Jurassic period thanks
to Liopleurodon no-nonsense capacity for
killing the Liopleurodon was a strong
propulsive swimmer and likely pounced
upon its prey with an ambush type
approach probably striking before any
form of fray knew what hit them
one specific species of Liopleurodon
known as el faro ox has even been
measured at over 20 feet making this sea
monster the stuff of which all bad
dreams are made life Lordan at 150
tonnes it is the largest and most
powerful carnivore ever to live on the
planet before we haunt those dreams with
our number1 sea creature here are some
honorable mentions number 1 Megalodon
[Applause]
oh it’s name means big tooth and with
good reason
as the prehistoric sea monster known as
the Megalodon was one of the most iconic
and frightening species of shark to ever
roam the earth likely an historical
counterpoint for the sharknado movie
series this beast was feared for its
near mythological level of kill
potential so strong and impactful was
Megalodon upon its local aquatic
communities that entire ecosystems could
be affected by how this apex predator
chose to hunt its food indeed both the
great white and mako sharks oh this
primordial beast a debt for their own
fearsome pedigree with the Megalodon
serving as the og of prehistoric sharks
badasses do you agree with our pics
check out these other great clips from
WatchMojo and subscribe for new videos
every day
[Music]
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