Take the slippery task of controlling a submersible vehicle, for example.

ECONOMIST: REPORTS

The company deployed the sonar on its torpedo-like Bluefin-21 autonomous underwater vehicle and then used a video-equipped remotely operated vehicle owned by Submersible Systems Inc. to inspect any promising radar targets.

WSJ: Sonar Image Renews Hope of Locating Earhart Plane

Other researchers, too, had sightings, including one from a small submersible and another from a Remotely Oerated Vehicle (ROV).

BBC: Pacific dives recover novel fish