Who needs fishing prowess when you have a remote-controlled, sonar-equipped, bait-dropping, mini-submersible at your disposal? Because with the new PowerRay underwater drone, that's exactly what you get. The PowerRay UUV comes from Beijing-based drone manufacturer PowerVision, makers of the PowerEgg UAV that we saw last August. While the Ray officially debuted back at CES in January, a technical issue with their display (read: their tank sprung a leak) prevented the company from showing off the device in its natural environment. However, at the company's launch party at the Aquarium of the Bay in San Francisco this week, we were afforded a close up view of the new drones.