Thorn!

Would you mind?

Prick ambushers got me ...

I don't appreciate your tone, Miss Stackhouse.

Executive Producers Yasushi Shiina, Noritaka Yamaji Julie K. Fujishima, Yuji Shimamoto

The crabs are missing spines, so they have a problem in this kind of rough terrain.

Evidently, a piece this big of tentacle has a hundred thousand little barbs on it and each barb is not just stinging your skin, it's sending a venom.

So this is one of their comments on how over coddled we've become.

Well, here's RHex RHex has trouble on rails on smooth rails, as you see here.

A little better than nature.

Whitebark grow in the mountains of Wyoming, Montana and other western states.

Do you know why cactus have needles?

The most venomous animal that lives in the ocean is the box jellyfish.

And where they have a problem with this kind of mesh, because they don't have spines.

Unless you pass out. I told you, my foot caught a nail. Hiyah!

And here's one of the things that Ida Tarbell said she said, He has a thin nose like a thorn.

One of several hawthorn species.

Boy Spiny.

And watch again, right there successful.

One day when I was only seven years old and fishing,

It seemed like you fainted.

Let's slow it down and you can see the spines in action.

I must look rather strange to you, all covered in spines, without even a face.

So if you look carefully at this, what you see is that they have spines and until a few weeks ago, no one knew what they did.

So he gave us each a cotton sack, about 10 feet long, about that big around, and we started picking.

They assumed that they were for protection and for sensory structures.

We can make spines that catch on simulated debris and collapse on removal to easily pull them out.

We have the zone with the sugar palms, and then we have this fence with very thorny palms to keep the orangutans that we provide with a place to live in the middle and the people apart.

The next step is to make compliant toes, and try to add spines and claws and set it for dry adhesives.

Now if we look at animals, though, to be really maneuverable in all surfaces, the animals use hybrid mechanisms that include claws, and spines, and hairs, and pads, and glue, and capillary adhesion and a whole bunch of other things.

He's got a thorn stuck in him

It's not the whole robot yet, we're working on it now you can see how it's attaching.

And from that little egg, they pass through this spiky little porcupine fish stage, reminiscent of their ancestry, and develop this is their little adolescent stage.