The first 100 people to sign up

using the link in the description will get 3 free

and delicious meals from Blue Apron.

Several months ago

I created a video explaining the different sizes

of sea creatures that currently exist. While impressive

I didn't talk about the sizes of land creatures at all

Which will be the focus of this video

Standing 4m tall and weighing up to 6000kg

The African Elephant is the largest land animal

that currently exists. For scale

an average human stand 1.6m tall

and weighs 62kg, yet

the African elephant is considered a tiny creature

when compared to the titans that once

roamed the earth even though this first creature was smaller than the African Elephant, the Anthripornis

still looks unsettling when compared next to a human.

As the largest penguin known to ever exist,

the Anthripornis stood at 1.8m tall and

weighed 90kg. A large number

of other creatures that currently exist today had WAY

bigger and more terrifying ancestors that used to

live on our planet, for example, take any rodent

today and compare them to Josephartagsia monesi

an alarming creature which can grow up to

3m in length, stand 1.5m

tall and weigh up to 1 ton

That is almost the weight of a full Toyota

Corolla in the form of what is essentially a

rat, yet arguably the most terrifiying

creature to have ever existed was the

A gigantic snake that lived millions

of years ago in modern South America, known to grow

up to 12.8m long and weigh up to

1135kg

This snake can consume a human in just

ONE GULP, safe to say, I'm pretty glad that this thing

doesn't exist anymore. The largest arachnid to ever

exist was a creature called

A scorpion-like creature that could grow up to

70cm LONG!! Yeah,

A pack of this things would not be a very welcome sight.

But a single Sarcosucnus would be equally as

terrifying. This creature was the largest

crocodile to have ever existed. Known to have grown

up to 12m in length and weigh a ridiculous

8 TONS!!! It would take more than

6 Toyota Corolla to depict it's

mass. Though frightening, this beast is far

from the largest Carnivore to have ever existed.

The T.Rex often comes to mind when we think of

history's largest Carnivore.

But this title really belongs to the

Measuring a terrifying 15m long and

weighing up to 21t

Paleontologist John R. Horner remarked

So while the Spinosaurus holds the record

for being the largest Carnivore, it is not the largest

land creature in history. That distinction has to go

To the aptly named

Measurements taken from a confirmed specimen revealed

that at least one of these creatures grew to an impressive

length of 37m and weighed

69 TONS!!! Which is the equivalent of about

12 fully grown African Elephants!!!

Compared to a human, the size of this ancient creature

truly epic!!! Which has lead scientists to

estimate that the Titanosaur grew to the

maximum size that biology will allow

land creatures to get to on earth!!! For instance,

if you take any creature on earth and increased it's size

somehow, it's mass would increase by a power

of 3. The width of the creature body meaning its muscles

and bones, would only increase by a power of 2.

Therefore, the larger the creature is,

the more mass needs to be dedicated to bones

in order to support it. Because of this law,

and the effective gravity on earth, it is extremely

unlikely that a land creature has ever existed

that weighed over 100 tons

Meanwhile, the ocean plays by a different

set of rules. The impact on size that gravity has

on the earth's surface is not affected in the ocean by

Buoyancy. So, unlike their counterparts on land,

creatures in the ocean don't have to prop up

all of their own weight. Which is how you end up with a colossus

like the Blue Whale

At 181 TONS!!!

The largest creature known to have ever existed.

But even this titan is likely

approaching the largest possible size of an Ocean

Creature. The problem is no longer Gravity, but

food and energy consumption.

The Blue Whale has to consume 3600kg

of Krill every single day just to meet

it's daily calorie needs. That's the same as about

16700 Big Macs!!!

For just 1 whale. Anything larger

would have to consume even more food. And the

the larger it gets, more difficult it becomes to find that food.

[Advertisement for Blue Apron]

Subtitles: Thomas Martinez