once wreckage of flight 370 is identified, an rov like this one is likely the next crucial step in finding the plane's black box. it's controlled from the surface using this joystick. has lights to illuminate the stark black of the ocean deep. cameras transmitting back footage in realtime. and high frequency sonar to combat the notoriously difficult visibility in the area of the indian ocean where the plane is believed to be. but most importantly, the rov has robotic arms called manipulators. >> has jaws, open and close the jaws. >> reporter: they are essentially mechanical hands, able to retrieve objects from the ocean floor, far deeper than any human could withstand. a second manipulator can be