Undersea telecommunication cables

“Ninety-nine percent of international data is transmitted by wires at the bottom of the ocean called submarine communications cables. In total, they are hundreds of thousands of miles long and can be as deep as Everest Is tall. The cables are installed by special boats called cable-layers. It’s more than a matter of dropping wires with anvils attached to them—the cables must generally be run across flat surfaces of the ocean floor, and care is taken to avoid coral reefs, sunken ships, fish beds, and other ecological habitats and general obstructions. The diameter of a shallow water cable is about the same as a soda can, while deep water cables are much thinner—about the size of a Magic Marker. The size difference is related to simple vulnerability—there’s not much going on 8000 feet below sea level; consequently, there’s less need for galvanized shielding wire. Cables located at shallow depths are buried beneath the ocean floor using high pressure water jets. Though per-mile prices for installation change depending on total length and destination, running a cable across the ocean invariably costs hundreds of millions of dollars.” – Mental Floss



Undersea telecommunication infrastructure without any boundaries: 


North Atlantic Ocean and Mediterranean Sea:


Caribbean Sea and South Atlantic Ocean:


Indian Ocean and Pacific Ocean:


Data source & interactive map version: Greg’s cable map


More: 

10 Facts About the Internet’s Undersea Cables: mentalfloss.com/article/60150/10-facts-about-internets-undersea-cables

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