Sea Monsters 3

Well, they aren't. Not really, anyway. The largest animal to ever live on Earth is the Blue Whale, which is alive and well today in spite of over over hunting from whalers within the last century. As for most animals these days being smaller on average? It could be less oxygen in the atmosphere than during previous epochs, but many scientist attribute it to the fact that smaller animals don't need to eat as much and need less space to live; natural selection usually favors smaller animals.

dolichorhynchops is an angry penguin ancestor

bigger thant the earth ?? wtf are u talking about

and u are a chicken

nat nat gnat dodarnet!

Bigger then the earth 0.o how did it breathe?

seriosuly they come up with these redicoulis names -.-

hesperornis looks like a chicken

DUDE THESE R DINOSORS

THey can show that it ate fish becasue if they get a good enough fossil of the creature, they also have half-digested stuff in it's stomach, like fish, or otehr prehistoric animals. Fast swimmer due to how its muscles work, and other aspects of its body.

the third one looks like a ziz bird. but the ziz bird was bigger than the earth.

the very very last one not the bird like thing but the thing at the end clip, i heard scientists caught one that was in a icicle

S**t mill years damn

wow!

styxorsaurus body is loch ness monster srsly