Underwater robot finds Dounreay radioactive hot spots
An underwater robot has recovered more than 250 radioactive particles from the seabed off Dounreay since it began operations two months ago.
The remotely operated vehicle (ROV) was built at a cost of more than £800,000 to find and retrieve the hot spots.
The tiny particles were flushed into the sea during reprocessing at the Caithness experimental nuclear power plant as long ago as the 1960s.
Up to 700 fragments could be retrieved from the seabed.