Over 50 years ago George Bernard Shaw suffered a sea sickening ride down the Pentland Firth, a body of Atlantic powered sea hemmed in between the Orkney Islands and the Scottish mainland off Scotlands West coast.

This fast channel water moves at up to 12 miles per hour and could be harnessed to provide a clean power source for Scotland and perhaps the "UK".

Scientists spending £1m ($1.6 million) of European Union cash on the project called Opt-Current, have claimed that within five years the Pentland Firth could be generating enough electricity for the whole of Scotland.