"Searching for the Loch Ness Monster BBC (2003)

In 2003, the BBC sponsored a full search of the Loch using 600 separate sonar beams and satellite tracking. The search had enough resolution to pick up a small buoy. No animal of any substantial size was found whatsoever and despite high hopes, the scientists involved in the expedition admitted that this essentially proved the Loch Ness monster was only a myth."
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wiki上的資料...
BBC的方法很不錯, 還找不到~~ 除非那隻水怪是終極戰士, 可以隱身