Does most international internet traffic travel under the sea?

The Claim

Undersea cables carry most international internet data.

The Answer

Telecommunications and government sources describe submarine cables as critical infrastructure carrying the vast majority of international data, despite the popular focus on satellites.

Why This Is Surprising

It sounds like the kind of claim that races around social feeds without context. The source trail matters because the best version of the wonder is the verified one.

How We Checked It

We looked for an authoritative primary source, checked the wording against at least one credible secondary source when available, and recorded the last review date.