Largest Creatures To Ever Exist On Earth: Monsters of the Ocean

Largest Creatures To Ever Exist On Earth: Monsters of the Ocean

This stunning mountain range stretching across North America is rightfully considered one of the most scenic places in the U.S. Hard to believe that at some point this area was covered by a sea, home to a vast number of underwater giants—true monsters for whom any marine predator alive today would have been easy prey.

That sea was named the Western Interior Seaway, and 80 million years ago, it divided what later became North America into two parts: Laramidia in the west and Appalachia in the east. At its greatest size, it was 2,500 feet (760 meters) deep, 600 miles (970 kilometers) wide, and over 2,000 miles (3,200 kilometers) long.

These ancient waters were ruled by giant reptiles up to 50 feet (15 meters) in length, the apex of the food chain of their time. Giant turtles, as large as modern SUVs, and colossal predatory fish up to 20 feet (6 meters) long, capable of swallowing human-sized prey whole. Some creatures were so powerful that they could easily crush a car with their jaws. But the most iconic figure of this ancient sea was the ultimate predator, the deadliest and most invincible underwater inhabitant of all time.

The Western Interior Seaway was home to everything terrifying and gigantic that you can, and cannot, imagine.

[franciswalsh]

Really enjoyed this!! The fact that so many of these creatures lived for millions of years makes our existence seem a pittance. We would be wise to remember this.

[Marinos]

Fun fact: The blue whale is the biggest (weight) animal that has ever lived on this planet.

[nijinokanata]

more prehistoric oceanic content pls!!! Made my weekend 😍

[DEATHGamerStickmanStories]

Great video as always, love the storytelling, the pace and the correct shots for the whole video.
Enjoyed and entertained 💯💯

[jackaubrey]

"Aerodynamic body shape..." ermmm, how about HYDROdynamic...? :)

[___MANA___]

I won't be surprised if we find Pokemon 😂

[Hallands.]

If Tylosaurus „suddenly appeared in our seas“ it would again be outcompeted – and quickly.

[missmiagi]

Appalachia is pronounced "Apple-Atcha" love the video so far ☺
💙❤💜

[petergaskin]

Sounds about right, size does not matter in the sea because the sea itself supports the weight.

[Petz-]

22:15 Since when is a pterosaur a bird ???

[kevinemery]

These are the best videos of there kind by far. Thank you !

[ghostshirt]

There's sharks who are harmless to people and theres sharks that can be dangerous to people. The largest sharks today are harmless to people and they are whale sharks and basking sharks so do your research, whale sharks and basking sharks eat plankton and small fish..

[sam-kid]

Just a bunch of theories that's all, nothing can be said for sure

[saltyassassins]

Please continue to put out videos like this. I love ❤️ the work you put into the videos.

[blacksaber]

I expect reptiles and fish to be big . but that parapuzosia had me shocked

[diggleda]

2:34 should be hydrodynamic not aero lol

[MrBoomer-kv]

We haven't yet explored the depth of the ocean😕

[dipomchemistry.]

We are waiting on a long route for our transformation via Evolution...

[sunmoonstar]

Where is Aust Colossus and Hector's Ichthyosaur?

[OldmanWithaGoldPan-og]

What about Godzilla?
Why’d ya leave him out?