"Scientists in the UK have decided to conduct an experiment to determine if one of Scotland's greatest legends is indeed a truly unknown species of mythical value, or just an animal that never existed, a global team of scientists planning to study in detail the icy Loch Ness next month, using environmental DNA (eDNA) in the experiment, which will determine whether Nessy is real or not.
The use of eDNA is a well-known tool among these scientists, which are used to monitor and harvest marine life around the world are also well established, meaning that this is not a purely experimental intervention, but very efficient.
Scientists hunt for DNA DNA Plan Ness Monsters Next Month https://t.co/NQUQIuCvgZ pic.twitter.com/3KIWIoCaPE 
– Reuters Science News (@ReutersScience) May 24, 2018  How does eDNA work?
The use of eDNA to detect marine species such as unknown sharks or whales has proven to be very successful. Whenever a creature moves through a particular environment, it leaves several pieces that could be used as DNA samples. In the case of the sea, creatures usually leave sperm, dandruff, skin or urine.
Team spokesperson Professor Neil Gemmell from the University of Otago in New Zealand said about the method: "This DNA can be trapped, sequenced, and then used to identify this creature by mapping the sequence with large databases of known genetic sequences of hundreds of thousands of different organisms. "
The #lochnesshunters adventure is upon us! Cited by @ProfGemmell we exclude ourselves from an international team @otago @UniCanberra @hullbiology @NHM_Denmark @UGrenobleAlpes & @ ThinkUHI investigate what lies beneath the surface of Loch Ness … by #eDNA https://t.co/ufinrrImr0 pic.twitter.com/jEqaGA06tQ  – Rivers & Loch Inst. (@RLI_UHI) May 23, 2018
Records of the Loch Ness Monster
The earliest records of the Loch Ness monster date back to the 6th th Century, when the Irish monk St. Columba is said to have banished a "water animal" into the depths of the River Ness, and since then Nessy, the Loch Ness monster, has been seen throughout history.
The main source of information in the 20 century was the famous image known as "the surgeon's photo", which was taken in 1934. It represented a long neck that came out of the water, and it later became a base for other depictions of Nessy. Nonetheless, it was revealed 60 years later that the image was a hoax using a sea monster model attached to a toy-scaled submarine.
There have been several failed attempts to track down the monster, and one of the recent Remarkable Attempts was already in 2003, when the BBC funded extensive scientific research using 600 sonar bars to track the beast.
However, the most recent attempt was made in 2016, when a high-tech naval drone found something similar to a monster, but it was not exactly what it was looking for. The discovery turned out to be a replica used in "The Private Life of Sherlock Holmes" and sank almost 50 years ago.