The ring-shaped device has been installed on Loch Ness
A device designed to harness wave power for the generation of electricity is being tested on Loch Ness.
The ring-shaped AWS-III deployed on the loch's waters is of a smaller scale than developer AWS Ocean Energy plans to eventually build.
The Inverness-based marine technology company hopes to have a full-size device ready for testing during 2012.
Investment of £2.3m was secured from the Scottish government to develop the AWS-III.
In 2008, the company said it had set its sights on winning the world's largest prize for marine energy innovation.
AWS Ocean Energy said it planned to double its workforce in 12 months, in part to improve its chances of securing the Scottish government's Saltire Prize.
Scottish First Minister Alex Salmond unveiled details of the award while on a visit to the US.