How Data TravelsInternet Infrastructure

The Undersea Internet

Almost all intercontinental data travels through cables on the ocean floor

Your video call crosses an ocean through a cable no thicker than a garden hose. So what happens when an anchor snags it?

You'll find out

  • Why your call skips the satellites
  • Why light can't cross an ocean alone
  • Who fixes a cable on the seabed

Why it matters

Streaming, banking, calls home: nearly everything you do across an ocean rides on a few hundred cables.

About 4 min7 interactive slides · 5 questionsLesson 59 · Zone 7

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