Top 20 Largest Sea Creatures that EVER Existed!


– [Announcer] The vast oceans
of our little blue marvel which make up 70% of the planet is for the most part still unexplored. So much so that new
discoveries regularly pop up every now and then, slowly revealing both the wonders and horrors hiding in it. It’s true, we’ve yet to find out even half of what the world’s
waters hide but I think the more we learn, the more
it will keep us up at night. Thinking how little we humans are compared to what lurks at the bottom of the sea. So speaking of horrors, here are the 20 largest sea
creatures that ever existed. While we’ve ordered most of
these creatures by weight, we’ve added some in because
they’re extremely unusual, or extremely long. – Amazing. – [Announcer] Number 20, Thalattoarchon. As of this video, not a
whole lot is known about the Thalattoarchon considering it was only discovered around four years ago. However experts can place its
size to around 28 feet long and that it belonged to
the ichthyosaur family, a distinct kind of
Pre-Historic marine reptiles that lived during the Triassic Period. Based on fossils, it’s possible
that it resembled a dolphin, except for its head which
is something I’ll hope to forget next time I’m
in the middle of the sea. Number 19, Thalassomedon. If the Loch Ness monster was real, then cross your fingers that
it isn’t a Thalassomedon. These carnivorous creatures
from the Cretaceous Period that belong to the plesiosaur family, grew up to 40 feet long
and were known to be one of the fastest underwater
killers of the era. That’s mainly because of its fins, which had a length of seven feet each, allowing it to cover quite
a distance with each paddle. And if giraffes knew
anything about this animal, I should suspect they’d be a
little bit jealous of its neck. Number 18, giant Pacific octopus. At up to 30 feet long, from its head to the tip of its tentacles, and weighting anywhere
from 130 to 165 pounds, although there are heavily
debated records that even propose they could weight up
to a whooping 0.3 tons. This is the largest
octopus that exists today. Aside from its size, the giant
Pacific octopus is also known to be one of the longest
lived octopuses out there, having a lifespan that’s anywhere between three and five years. Number 17, Nothosaurus. The Nothosaurus were notorious predators during the Triassic Era as they are known to have been blitz hunters
in that they preferred attacking swiftly and by
surprise to capture their prey. When you think about
it, it’s understandable that they would make use of this tactic. They’re relatively smaller than
other creatures of that era. Being only 13 feet long and
weighting only about 0.15 tons. But hey, size doesn’t matter when you have the element of surprise. Number 16, giant squid. To this day, not much is
known about the giant squid. Especially when we consider
that we have only recently been able to capture a live specimen, not more than two decades ago. All other evidence either
come from video footage or carcasses that wash ashore. As such, the largest known
specimen humans have found of this deep sea jumbo
calamari stands at 59 feet and weights about 0.9 tons. Did I say calamari? I meant Kraken. Number 15, Jaekelopterus. The Jaekelopterus is the kind of creature that you can usually find inside fictions stories at its simplest. It’s an ancient sea
scorpion that lived nearly 400 million years ago with a
length reaching up to 9 feet. The Jaekelopterus has become the largest arthropod
to have ever existed. As for its weight, there
are reports that place its weight somewhere around 0.36 tons but it’s still a heavily
discussed point among experts. I suppose on the bright side,
unlike its present day cousins it’s not small enough to
make your shoe its home. Number 14, Tanystropheus. At 20 feet long, and
with a weight clocking around only 0.4 tons, the
Tanystropheus doesn’t look like it’s much of a threat compared to other creatures on this list. That is until you find
out that it’s the kind of marine reptile that was amphibious. It can hurt on both land and under water. According to paleontologists,
it lived during the Triassic Era, preferring to prowl the depths than the lands for prey. Number 13, giant oarfish. Oarfish are a pretty rare
sight in the world today, which gave way to the superstition that there’s a disaster coming
when they wash ashore. True or not the giant oarfish
is a majestic sight indeed. These bony fishes can grow
up to lengths of 36 feet with the largest recorded weight being more than half a ton,
at around 600 kilograms. Number 12, Liopleurodon. The Liopleurodon is the perfect
poster boy for nightmares that could be found in the
oceans Pre-Historic or otherwise. It being a Pliosauroidea,
which is a family of marine reptiles that are
distinct from dinosaurs, this monster from the deep
from the Jurassic Period is estimated at around 30 feet long and weights about 1.75 tons. If its size isn’t enough
to make you wet your pants, then how about the fact that its mouth is lined with teeth the
size of kitchen knives. Luckily it’s extinct, but even
the thoughts still gives me the chills when I’m floating
in the middle of the sea. Number 11, Dakosaurus. This monster from the Jurassic
Period is believed by experts to be similar to modern-day crocodiles. However instead of legs, it has fins on its sides that’s allowed it to glide underwater as
it hunted down its prey. Weighting two tons and
growing to 16 feet long, the Dakosaurus’ most dangerous
weapon was its teeth, which looked like rows of talons. As such, it was one of the
deadliest predators of its age. Number 10, Edestus. The Edestus is a
Pre-Historic shark that lived around 300 millions
years ago in an era known as the Carboniferus Period. Based on its remains,
the Edestus is estimated to have grown up to 22 feet long, with an approximate weight of two tons. Adding to its fierce
and size, its nickname scissor-toothed shark just
makes it all the more horrifying compared to the modern-day
sharks of today. Number nine, Shastasaurus. This is another one of the Triassic Period’s
giant marine monsters. This 65 feet long reptile
belong to the ichthyosaur family and weights somewhere around five tons. Despite its imposing size however, this breed of ancient
animal was not exactly what you’d call an apex
predator since it preferred to feed on small fish
than hunt bigger gain. Still that doesn’t remove any
of my fear of this creature. Number eight, Mosasaurus. If you’ve seen Jurassic World, you’ll recognize this
creature although back when it was alive, it
was a surface dweller, rather than a performing monkey at an extremely dangerous amusement park. This behemoth lived during
the Cretaceous Period and is a true apex
predator when you consider its 60 feet long body
that weights somewhere within the area of five to six tons. Also, just because it’s big,
doesn’t mean it’s sluggish. The giant fins on the
Mosasaurus made it one of the most efficient
hunters during its era and with a mouth like that, it could kill sea turtles with a single chump. Scary stuff guys. Number seven, Tylosaurus. The Tylosaurus is what you could call a close cousin of the Mosasaurus. They are on the other hand smaller compared to their counterparts being that they grow to only 50 feet long. As for their weight, it’s
a heavily debated topic with theories ranging from
anywhere between 15 to 20 tons. What they lack in size though, they make up for in total savagery. Even by Cretaceous Era standards the Tylosaurus is one bad mother flipper. It’s the kind of monster that,
according to its remains, regularly fed on its young. That’s just cruel. Number six, whale shark. Whale sharks if anything hold the right to bear the title of gentle giant. This krill eating species
is the largest known to men with lengths reaching up to 41.5 feet and weighting approximately 20 tons. Sadly whale sharks are in
danger of becoming extinct, thanks to a variety of reasons
with overhunting by humans for his fins and meat
playing a primary role. A sad fact that makes you question who the monsters really are. Number five, sperm whales. Sperm whales can grow
up to lengths of 67 feet and can weight approximately 45 tons. That being the case, they are known as one of the largest
predators in the known world. To be specific, they’re recorded as the largest toothed predators by none. Despite their size is having
the capacity to kill a man with one swish of their
tails, sperm whales actually prefer minding their own business in the deep sea, hunting mostly squid. Number four, Basilosaurus. Despite its name suggesting
that it’s a reptile, the Basilosaurus is actually an ancestor of the modern-day whale. However by no means can
you call it a gentle giant. This titan lived about
40 million years ago and was known to be a vicious predator, eating sharks like they’re
a bunch of guppies. According to estimates,
they grew up to 60 feet long and weighted up to 60 tons. Number three, fin whale. Fin whales are known as
the second largest animal in the world, which is right behind the next entry on this
list in terms of size. These marine mammals can
grow up to 89 feet long and possess a weight of 74 tons. Like other whales, this species
mostly feed on small fishes and crustaceans by way of filter feeding. Today sadly, fin whales still belong on the endangered species list because of overhunting by men back in the 1900s. Number two, blue whale. Blue whales are the largest
animals known to men. Standing at around 90 feet long, with a weight reaching up to 200 tons, these aquatic marvels
are also becoming rarer and rarer in the world today. Despite blue whales not being predators since their diets
consists mainly of krill, tiny shrimps that it sucks into its mouth, It’s still no reason to
think that these giants cannot swallow you whole in one big gulp if you’ve gotten in their weight. To put its size into perspective, here are two fascinating facts. The tongue of the whale alone
weights as much as an elephant and its heart as much
as an automobile, wow. Number one, Megalodon. Despite being slightly
smaller than the blue whale, its maximum size is still heavily debated and given its ferociousness you’d probably be frightened into
thinking it was way bigger than any of the other
creatures in this video. The Megalodon is the kind of
beast that scuffs at dinosaurs. In general terms, it’s a shark. Now although sharks are
scary enough as it is, just imagine one that looks almost exactly like a great white,
except it’s 60 feet long and weights anywhere
between 75 to 100 tons. To put things into
perspective, great white sharks only grow somewhere around 20
feet and two to three tons. That is to say, the Megalodon just proves how immensely more brutal the world was a couple of million years ago. Do you think you’d have the guts to face any of these giants if they were around? Sound off in the comment
section down below, and if you enjoyed this video make sure to press that subscribe
button so you won’t miss any of our new releases in the future. Thanks for watching. (intriguing music)

Comments 100

Leave a Reply

Your email address will not be published. Required fields are marked *