The networked world underwater —
CNN: Are we completely reliant on submarine cables?
Alan Mauldin: Yes, for international communications, over 99% is delivered by undersea cables. It's a common belief that satellites are the future of how things are carried, but that hasn't been the case for quite some time. Satellites are used for broadcasting, and are useful for rural communities and very remote places. The main advantage of cable is it's a lot cheaper. Satellite capacity is limited so it's very expensive. Cables can carry a massive amount of data by comparison so it's a lot cheaper.