'Kevlar' To Protect Cables From Shark Bites
Google is reinforcing its undersea internet cables with a Kevlar-like material because sharks keep biting them.
It is going back to 100,000 miles of fibre optic cable that it owns around the globe and reinforcing it with the protective matting.
Since the mid-1980s it has been known that sharks are drawn to undersea cables but it is unclear why.
Some have suggested that they are attracted by the electromagnetic signals given off by the lines which resembles the field created by fish.
Given that fibre-optic cables are made of strands of glass, they are particularly vulnerable to damage compared to the older and slower copper cables.
Undersea cables are the backbone of the internet, transmitting data around the world.
Earlier this week Google announced plans to build a new trans-Pacific cable network connecting Japan and the United States.
Working with a consortium of Asian telecoms companies, the $300m (£179m) system which address the demand for broadband on the key route with a 60 terabits per second connection.