The vast majority of the world communications are not actually carried by satalite, but instead huge undersea cables spanning thousands of KM long. According to Wikipedia, only 1% of Internet data and voice traffic is transmitted through satellite links while the remaining 99% is still carried by undersea cables spread across the world’s oceans.

A Map of World’s Undersea Internet Cables

Submarine Map is an interactive map which gives some good idea about the physical routes of these cables lying under the sea bed. You can zoom-in or click on any particular colored cable to know about their respective owners.

This incredible infographic map from Eleven2 shows how people rely on cabled around 10cm in diameter to link the world together!