Undersea Cable Networks
Most long-distance internet traffic travels through fiber-optic cables on the ocean floor, so the supposedly weightless internet inherits the constraints of physical routes, landing points, terrain, and repairs.
Send data from India to the United States and, most of the time, it does not rise into orbit. It descends into the ocean and crosses it through a physical fiber-optic cable.
E1The cloud has a seabed
Satellites are the visible intuition; submerged fiber is the working backbone. Long-distance networks favor infrastructure whose capacity can match enormous aggregate demand. Once traffic depends on cables, geography enters the system: routes must cross real terrain, emerge at particular landing points, and remain repairable. The internet therefore behaves less like an ethereal broadcast and more like a material transport network.
E1Not every packet goes underwater
This model should correct the satellite-first picture, not replace it with an absolute. The source says ocean cables carry this traffic most of the time, not always. Different communication problems—including some forms of last-mile-access—can make other links useful; the claim here is about the dominant path for long-distance volume.
E1Trace the route before blaming the app
When evaluating an international service or outage, sketch its likely physical journey: local connection, cable landing point, ocean route, distant landing point, then destination network. Ask where capacity, concentration, or repair difficulty could bind—much as transport geography shapes the movement of goods.
Episodes that teach this
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Internet is Not in Clouds, It's in Oceans - Learn it Internet Works
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The transcript says the India-to-US path is 'definitely not satellites' most of the time, but physical fiber-optic cables crossing oceans.