tech
February 25, 2026
Shark Legend a Lie? The Secret of the First Optical Cable on the Sea Floor
Specialized ships have begun the historic undertaking of recovering the TAT-8 system, the first transatlantic optical cable that laid the foundation for the modern internet. Nearly 40 years after it was laid at a depth of 8,000 meters, this engineering gem is returning to land. Instead of remaining forgotten in the silt, thousands of kilometers of glass fibers and tons of precious copper will be recycled in state-of-the-art facilities.
TL;DR
- Specialized ships are recovering the TAT-8, the first transatlantic optical cable, laid 40 years ago at 8,000 meters depth.
- The recovered cable, containing thousands of kilometers of glass fibers and tons of copper, will be recycled.
- Contrary to popular belief, sharks were curious rather than aggressive towards the cable, leading to the development of "fish-bite" armor.
- TAT-8 was revolutionary, enabling speeds of 280 Mbit/s using light pulses, and established the template for modern undersea cables.
- The recovery is an environmental action and a modern-day 'gold mining' operation, with recycling planned for 2026.
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