Map of Global Underwater Telecom Routes
The map shows 232 routes currently in operation, with 12 more planned in the coming year. As ExtremeTech points out, submarine data routes like these have been around for some time. The first ones dating back to the 1860s for transatlantic cable runs.
If there's a common theme here, it might be that no technology is immune to the physical realities of mother nature. Regardless of whether you're tugging lines across the ocean for early telegraphs in the 1800's, or prepping for terabytes of data in the 21st century.