Marine power

It was announced today that a wavepower farm is to be established in the Orkney Islands. Electricity can be generated from waves by a series of large boons. The wave action causes movement at the junction of the boons, which can be transformed into electricity by a modified generator, the way most electricity is generated. The company who has developed the Pelamis (seasnake) has a good representation of the units on its website.
A number of Pelamis units were constructed at Arnish, outside Stornoway, last summer and transported to Portugal. Pelamis was designed, developed and trialled in Scotland. As the Ocean Power website shows, Pelamis covers a section of the sea surface.

Another generator using the power of the sea was designed, which would sit on the ocean floor at least 6 metres / 20 feet under the surface. It would operate by using the tidal flows. This has no visual impact, and does not occupy areas of the sea's surface.