Remember the PowerRay? It is an underwater robot with a fishfinder unit that we covered here a few days ago. PowerVision has now posted a video of it in action. The robot has a sonar system to detect fish and send images of underwater landscape to users. The device can dive as deep as 30 meters and detect fish up to 40 meters below it.
You can combine the robot with a virtual reality headset to get a first-person view of all the action. PowerRay is compatible with iOS and Android devices.