So the great thing about the Mola is that when we put the tag on them if you look up here that's streaming off, that's right where we put the tag.

They're not big migrators. This is their track we deployed the tag off of Tokyo, and the Mola in one month kind of got into the Kuroshio Current off of Japan and foraged there.

Surgical staples are commonly preshaped into a M .

And it turns out, actually, that 42 percent is the Mola mola fish.

And it's pictured right here, that little tag up there.

The tags cost 3500 dollars each, and then satellite time is another 500 dollars, so you're like, oh, I hope the tag is okay.

I made that up because I just wanted to put up a slide of the Mola mola fish.

I used a little tweezer which I made from a hair clip.

The Mola's no exception.

So we thought, OK, this must be a spring the saddle could very well be a spring.

And that predator is the giant ocean sunfish, the Mola mola, whose primary prey are jellyfish.

Molas are infamous for carrying tons of parasites.

And it just so happens that's a parasite hanging off the Mola.

So, the saddles that saddle shaped spring has actually been well known to biologists for a long time, not as a spring but as a visual signal.

Their other name, Mola mola, is it sounds Hawaiian, but it's actually Latin for millstone, and that's attributable to their roundish, very bizarre, cut off shape.

And over in these places, the Molas are caught in set nets that line these countries.

We were served a nine course meal of Mola after we tagged.

Despite this, the song has become a staple for most of the band's live performances.

I set up a website because I was getting so many questions about Molas and sunfish.

That little tag can record temperature, depth and light intensity, which is correlated with time, and from that we can get locations.

And I think it's kind of a nice little cosmological convergence here that the Mola mola its common name is sunfish that its favorite food is the moon jelly.

And lots of generations, lots of tweaking and torquing, and we turn our puffer into the Mola.

So the hardest part of tagging, now, is after you put that tag on, you have to wait, months.

Rubber band a tension spring where energy is stored by stretching the material.

And under those kelps this is why the Molas come there because it's spa time for the Molas there.

A spring is an elastic object used to store mechanical energy.

Two of the stones fall into the river, while the last falls into Mola Ram's hand, burning him.

And then we did a series of calculations, and what we were able to show is that these mantis shrimp have to have a spring.

And all of these are the same principles that apply to the saddle shaped spring in stomatopods.

And again, that brings us back to the importance of that spring in storing up and releasing so much energy in this system.

And the Molas there, you can find them with a spotter plane very easily, and they like to hang out under floating rafts of kelp.

And you're just wondering, oh, I hope the fish is safe, I hope, I hope it's going to be able to actually live its life out during the course that the tag is recording.

The poor little Molas coming in, getting ripped to shreds, so we head down south, to San Diego.

And this is quite interesting, to find evolutionary origins of visual signals on what's really, in all species, their spring.

While Mola Ram escapes, Indy and Shorty rescue Willie and retrieve the three Sankara stones, the village children escape.

And that's actually what drew me to the Mola in the first place, was this terribly bizarre shape.

Marine biologist Tierney Thys asks us to step into the water to visit the world of the i Mola mola i , or giant ocean sunfish. Basking, eating jellyfish and getting massages, this behemoth offers clues to life in the open sea.

But unfortunately Molas, even though they don't school, they still get caught in nets as by catch.

Indy catches the now cool stone, while Mola Ram falls into the river below, where he is devoured by crocodiles.

Suppose that the spring has reached a state of equilibrium, where its length is not changing anymore.

So, we've had very solid evidence showing that that saddle shaped structure actually compresses and extends, and does, in fact, function as a spring.

And they come and give the Molas you can see they strike this funny little position that says, I'm not threatening, but I need a massage.

And it's also a great place to go down south because the water's warmer, and the Molas are kind of friendly down there.

If we're going to save the world from total jellyfish domination, then we've got to figure out what the jellyfish predators how they live their lives, like the Mola.

This is part of a much larger program called the Census of Marine Life, where they're going to be tagging all over the world and the Mola's going to enter into that.