Typical double-armored submarine fiber cable. Legend: 1) Polyethylene, 2) Mylar tape, 3) Galvanized steel wires, 4) Aluminum water barrier, 5) Polycarbonate, 6) Copper or aluminum tube ...

While satellites and WiFi get the attention, it's huge undersea cables that still make the world work.

This sled, about the size of a school bus, employs high-pressure water jets to dig a trench more than 10 feet deep, allowing for safe cable placement. A barge carrying armored submarine cable and ...

At extreme depths, submarine cables are lightweight and thin, typically only 17 to 21 millimetres in diameter, resembling a garden hose. In rare cases, armoured cables may be used where the undersea ...