The fisherman's friend: Hi-tech drone can track prey underwater - and even drag your hook to them

For those who don't have the patience to wait for fish to take the bait, a robotics firm has unveiled a device that finds and attracts them to you. Called the PowerRay, the underwater drone uses a precision remote bait drop and blue-hued fishing lures that basically attaches the fish to the dangling hook. The unmanned vehicle also transmits data, fish alerts and live video feed and photos of the underwater world to the fisherman's smartphone via a companion app. PowerRay uses a precision remote bait drop and blue-hued fishing lures that basically attaches the fish to the dangling hook. The unmanned vehicle also transmits data, alters and live video feed and photos of the underwater world to the fisherman's smartphone via a companion app The sonar system can detect fish up to 131ft below the swimming robot and can dive up to 98 feet.