The Shape Of Life Episode 2 Life On The Move (PBS)

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Broadcast (2002) When we think of animals, we think of movement. Surprisingly, the diverse and graceful ballet of animal movement may have started with cnidarians (pronounced "ny-DAIR-ee-ans), a group that includes corals, sea anemones, sea pens and jellyfish. All of these animals, with few exceptions, have nerves and muscles. Because cnidarians are the simplest animals to possess this complexity, their direct ancestors were very likely the first animals to bundle the power of nerves and muscles together, enabling them to move and exhibit discernible behavior.

Cnidarians are also the first animals with an actual body of definite form and shape. Most feature tentacles with stinging cells used to capture prey. The cnidarian's sting comes from toxic harpoons called nematocysts. Triggered by touch or by certain chemicals, nematocysts fire out of the stinging cells at lightning speed.

A revolutionary eight-part television series that reveals the dramatic rise of the animal kingdom through the breakthroughs of scientific discovery. The Shape of Life tells the gripping and magnificent tale of the beginnings of all animal life. Using innovative camera techniques to capture rarely seen creatures and breathtaking computer animation to reveal stunning detail, this digital high-definition series tells the stories of the revolutionary findings and scientific breakthroughs in biology, genetics and paleontology that are rewriting the book of life. The series celebrates the splendors and struggles of evolution, unveiling eight biological designs that are the underpinnings of nearly all animal life.

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[beltedDEEP]

keep um coming my friend, much appreciation for you uploading these videos, I know its gotta be tedious.

[theheinzification]

hmmm, those first hunters ... what did they hunt, since there were no other animals except sponges?

[missb021]

25:00 so interesting, so cute :)

[missb021]

your work is so great, thank you for all of your efort,btw i have a question - isn't their name cnidaria, nor niderains?

[myklee]

This truly is the best youtube channel. Thanks a ton!

[theheinzification]

@gotohell114 you write about collecting and gathering, not hunting. feeding on other life forms was going on already of course, but not hunting in the way its generally understood. otherwise a rabbit would be a hunter too.

i agree though, carrots can get pissed off easily and you should be very cautious. but they are harmless compared to those horrible killer tomatoes watch?v=ebfLWAB8bY4.

[gotohell114]

@theheinzification

That's easy, single-celled creatures. Or sponge particles as they are floating around. Or just anything smaller than themselves.

Remember these were the first multi-cellular hunters, but 'hunting' had been going on for millions or possibly billions of years already.

Hunting not necessarily applies just to animals in this case.

(I am off to hunt down a carrot, they can be dangerous if they are only wounded)

[MrDjurdjevka]

@theheinzification

The documentary is good but i also have that question.... BBC is much better... However, worth watching...

[chiropra1]

As a chiropractor, I find the beginnings of movement and nerves fascinating. Thank you. Life is awesome.

This really brings home evolution for me.

[ahappynoob]

The Moon Jelly life cycle is amazing.