How The Internet Travels Under Sea. No matter where you are located, almost all of your internet data is transmitted through a hidden network of undersea cables. In fact, 97% of all internet traffic runs through this hidden infrastructure of thousands of miles of fiber optic cables that zig-zag our ocean floors.

With our dependence on the internet increasing by the day, modern life is totally reliant on these sub-aquatic wires. But how do they work, and what is the future of internet communications? Also, how is it possible that your internet connection is mostly always there – don’t these cables get destroyed by ships and sharks?

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