Drones fitted with infrared cameras are to be flown over the loch, and a hydrophone is to be used to detect unusual underwater sounds.
Organisers said volunteers would also look for possible signs of a creature from safe vantage points on land.
The search is to be held on 26 and 27 August.
The Loch Ness Centre in Drumnadrochit and a volunteer research team called Loch Ness Exploration are organising the effort.
[
www.bbc.co.uk]
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