So far, the study, supported by Scotland's national tourism body, has debunked the existence of a so-called unexplored crevice or trench on the floor of the lake, which Loch Ness Monster enthusiasts had dubbed "Nessie's lair."
"Sadly the trench is not there," leader of the Loch Ness Project, Adrian Shine, told Sky News. "So the Nessie's lair... does not exist."
However, the team has made one discovery — a 30 foot model of the monster, built for the 1970 film The Private Life of Sherlock Holmes.
The film prop was built with a neck and two humps, however, director Billy Wilder didn't want the humps and asked for their removal. That decision affected the prop's buoyancy and the Nessie model sank, according to BBC News.
The survey, being operated by Norwegian company Kongsberg Maritime, is taking place over two weeks.
"We are excited to see the findings from this in-depth survey by Kongsberg, but no matter how state-of-the-art the equipment is, and no matter what it may reveal, there will always be a sense of mystery and the unknown around what really lies beneath Loch Ness," says VisitScotland's Chief Executive Malcom Roughead.
Earlier this year, a local boat captain claimed he captured a sonar image of what appeared to be a long object with a hump lying on the floor of the lake.
The myth lives on and the tourists keep visiting.
Photos from around Loch Ness:
Views around Loch Ness, Scotland -- Loch Ness Monster
An underwater drone is searching for the Loch Ness monster
Urquhart Castle is seen on the edge of Loch Ness in Scotland, Britain April 13, 2016. REUTERS/Russell Cheyne
Lloyd Scott, 41, poses for photographs wearing an antique deep sea diving
suit in Loch Ness, in Scotland, ahead of his underwater marathon world
record attempt to raise money for children with Leukaemia, September 28,
2003. Scott, a former leukaemia sufferer, who also completed the 2002 London
Marathon in a diving suit, begins the attempt on Sunday and will take 14
days to complete his 26-mile underwater trek where he will be 30 feet (9.14
metres) below the surface of the loch, the home of the mythical Loch Ness
Monster. Pictures of the month September 2003 REUTERS/Christopher
Furlong Pictures of the Year 2003 BEST QUALITY AVAILABLE
INVERNESS, SCOTLAND - JUNE 26: A general view over Loch Ness on June 26, 2015 in the Highlands, Scotland. A major six month long study is currently taking place, the 'National Golden Eagle Survey', which is the first of its kind in 12 years. The survey is co-funded by the RSPB and Scottish Natural Heritage. Surveyors from the RSPB working in collaboration with the Scottish Raptor Study Groups aim to provide a picture of the populations of breeding pairs of eagles across the country to determine whether conservation efforts are working. GPS tags are used to monitor the birds, and act as a deterrent against wildlife crime, which continues to be a major risk. 17 Golden Eagles were confirmed illegally killed in Scotland between 2003 and 2013 but the true figure is likely to be many more. The count will update the previous figure of some 440 breeding pairs of Golden Eagles in Scotland with only one adult male bird South of the border in the Lake District. Golden Eagles were once common across Britain, but due to persecution were only found in Scotland by the mid-19th century. Numbers have increased steadily since then but Golden Eagles still face pressures from poorly sited windfarms, large scale planting of conifers like Sitka spruce and, particularly, illegal killing. (Photo by Dan Kitwood/Getty Images)
INVERNESS, SCOTLAND - APRIL 16: A general view of Urquhart Castle, Drumnadrochit on April 16, 2014 in Scotland. A referendum on whether Scotland should be an independent country will take place on September 18, 2014. (Photo by Jeff J Mitchell/Getty Images)
INVERNESS, SCOTLAND - APRIL 16: A view towards the new bridge, from The Old Thomas Telford Bridge, Invermoriston on April 16, 2014 in Scotland. A referendum on whether Scotland should be an independent country will take place on September 18, 2014. (Photo by Jeff J Mitchell/Getty Images)
UNITED KINGDOM - DECEMBER 24: Ruins of Urquhart castle (13th-16th century), Loch Ness, Highlands, Scotland, United Kingdom. (Photo by DeAgostini/Getty Images)
INVERNESS, UNITED KINGDOM - JUNE 09: Music fans attend day 2 of the Rockness festival at Clune Farm, Loch Ness on June 9, 2013 in Inverness, Scotland. (Photo by Ross Gilmore/Redferns via Getty Images)
The remains of Urquhart castle on Loch Ness. (Photo by: Loop Images/UIG via Getty Images)