 This is amazing. Big surprise. Of course, I've seen a video of this. We made the small ones just for a London exhibition. We made the London Science Museum with them to demonstrate their work. This is pure. So what it does is... Autonomous? Yes, it's autonomous. What it does is keeps at a certain depth and then does random search. Oh, okay. But what we had was... Nice themes. Not the proof. Light beacons at the bottom. They're like treasure chests. People could have had this on and off. They would follow the light when they could see it. They have light sensors in front. It's made it just to demonstrate the whole idea of the mechanics of the bigger robot. The bigger robot will have, well, most of the camera on it. What it will do is... Now these archaeologists dive down there on the shipwrecks around them. And they film stuff with the camera trying to find out... Trying to find some clues about which ship it is and when it runs. That's a sank. But the thing is, it's very dangerous to dive. Inside, especially? Yeah, and even outside. The seabed is right with all these fishing nets, for example. It's very easy to get stuck. And this problem, if you're a human being, you have some problem down there. You can't come up. So you get stuck inside the wreck or something? What sensors does this thing have? For depth, it's like pressure or something? Yeah, for depth there's pressure sensors that come through the tube here. This is the same kind of depth sensor that is in the diver's watches. Okay. Then there's the exact same iron mule that we are using on our robots. And then we have this... Arduino. Yeah, Arduino. I guess. And here are the two light sensors. And they use modulated light. You can't see it, but it's like 20 kilohertz of visible light just to differentiate between ambient light and... Yeah, and I think even the motors here, they look like difficult servo motors, but they are actually modified. We took them apart and put inside of them magnetic absolute encoders. So they know their position all the time. It took two months too. They are quite smaller than the Dynamics. Yeah, there are these micro servers, which are also quite typical, usually used on airplanes, for example. What is this channel? It's a pressure sensor here. Ah, it's a pressure sensor that talks outside. Yeah, you can... Oh, it's okay. There's a tube. So the cell is there? No, this is a screw hole, but... Oh, and that's the sensor? Ah, yeah, here's the tube for pressure. And the thing is, if you put it underwater, it doesn't fill with water, but the pressure still gets through. So right now it's like doing a random search, and it's not finding anything right now, right? Yes. And the motions of the fins and all the motion mechanics, this is like the university research. Is it developed here or...? It's something Kai wrote in five hours. Okay. So you did those motions, then? Yeah, well, the guy who came up with the whole idea of how the robot moves is actually right there, working or just spending time.