It is not something that you can see and touch except using a remotely operated vehicle.

WHITEHOUSE: Press Briefing

This remotely operated vehicle (ROV) is equipped with an HDTV camera and receives power from the ship.

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Remotely operated vehicle pilots must devise painstaking, step-by-step procedures to deploy the equipment.

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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.

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Nor when a remotely operated vehicle activated it later.

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The robot known as GROVER, which stands for both Greenland Rover and Goddard Remotely Operated Vehicle for Exploration and Research, will roam the frigid landscape collecting measurements to help scientists better understand changes in the massive ice sheet.

ENGADGET: NASA's GROVER eco-rover to examine Greenland's ice sheet (video)

We've seen mechanical devices creep through the inside of intestines, huge mounds of dirt, and even through the San Francisco Bay, but now a British deep-diving remotely operated vehicle ( ROV) is getting set to probe the depths of Antarctica.

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Deploying a remotely-operated vehicle (ROV) in the Cayman Trough, they stumbled across a previously-unknown site nearly 5000m below the surface.

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The star of the show is ISIS, the remotely-operated vehicle equipped with HD cameras despatched as an emissary into the unlit depths.

BBC: A deep sea mission of genuine exploration