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Google is fortifying its underwater internet cables to protect them against shark attacks.

According to reports, the fibre optic lines under the Pacific are being wrapped in a super-hard material similar to Kevlar, which is used to make bullet-proof vests and military armor.

News of sharks biting the undersea cables date to at least 1987. The New York Times then reported about sharks showing an inexplicable taste for then new fiber-optic cables that strung along the ocean floor linking the United States, Europe, and Japan.

In 1985, shark teeth were reportedly found embedded in an experimental line in the sea off the Canary Islands, reported TOI.

Although its is unclear why sharks are attracted to undersea data cables, a school of thoughts suggest that curious sharks are attracted to the electric and magnetic fields around the cables which are far stronger than with older copper lines, and mistake it for distressed fish.