Most Internet Traffic Runs Through 570 Submarine Cables on the Ocean Floor. That Should Scare You.
Note: The “400 cables” number you see cited all over the web is old — pre-2020. Per TeleGeography’s own February 2025 piece (Lane Burdette, “How Many Submarine Cables Are There, Anyway?”), It’s 570 active in-service systems right now, with 81 more being built. The 2026 TeleGeography map shows 694 total — but that counts planned…