loch ness monster fact or fiction ?

The Loch Ness Monster, also referred to as "Nessie", is a creature or group of creatures said to live in Loch Ness, a deep freshwater lake (known in Scotland as a loch) near the city of Inverness. Nessie is generally considered a lake monster. Along with Bigfoot and Yeti, Nessie is perhaps the best-known mystery in cryptozoology. "Nessie" was born by a journalist in a newspaper article in 1933 after the first modern sighting of a monster in loch ness was reported. The oldest sighting on record dates back to AD 565 when St Columbia was said to have seen a large monster in the water. Since the first newspaper report thousands of sightings have been reported on the loch and on land, many report the long neck and head emerging from the loch, others see moving shapes and objects on the loch surface or a large beast crossing the road in front of them. Over 50 images have been recorded but only six of these have stood the test of time, the others are either fakes or mis-identifications. The most famous of these images is the 'surgeon' photo taken by gynecologist Kenneth Wilson in 1934. His photo showed what looked like a large neck and head emerging from the loch although with nothing visible in the background a scale could never be found. It is now pretty much agreed that the surgeon photo was faked by using a plastic-wood model attached to a toy submarine. In 1968 the first sonar investigation took place in an attempt to track large objects in the loch, this was unsuccessful. The second attempt Operation Deep-scan in 1987 employed 20 sonar boats and made 3 possible contacts between 77 and 178 metres. The latest scan was made in 1992 to build up a picture of the bottom of the loch, no evidence of caves or anomalies were found. The picture reproduced here from the 1987 expedition may look impressive but questions have been raised about the high level of computer enhancement. Many theories have been put forward to explain what is in the loch but it is a mystery to this day. The most popular of these was the plesiosaur theory. An extinct dinosaur that some believe has survived in the loch without detection for millions of years. It was only the 'surgeon' picture that held any real evidence for this theory which is now discounted by most serious researchers. The ancient plesiosaur is also an air breather and a surface dweller which makes it a very unlikely candidate. Although lots of sightings have been made of a creature resembling a plesiosaur (or at least at long neck and small head) some if not all of these have been influenced or shaped by the media. There are many less exciting explanations for the numerous sightings in the loch such as birds and deers. Otters are another candidate that could also relate to some land sightings. The loch has a wealth of other phenomena that could lend a hand in the explanation such as gas bubbles arising from decomposing matter shifting rocks, logs and assorted debris around the loch. The loch which at its deepest measures 230 metres can also give rise to thermoclines (cyclic temperature variation) which can also displace objects. The wakes of boats have been known to cross the loch for up to 20 minutes and have often been mistaken for nessie. Especially hot summers can create a mirage effect across the loch that seems to magnify all objects (curiously the first sighting in 1933 occurred in one of the hottest summers on record). Other known creatures found populating the loch are eels which live on the bottom of the loch but seem to thin to be misidentified as a monster and seals which were videotaped on the loch in September 1998. The seals which travel from the sea via the river ness have led others to speculate that the beast may be a whale travelling via the same route. Unfortunately the chances of a whale swimming up the river unnoticed are slim as they are air-breathers and need to surface regularly. An extinct long necked ancestor of the whale, the zeuglodon was also forwarded as a candidate in the midst of the dinosaur theories. Like its modern equivalent however, this creature was also an air breather but over a 100 million years of evolution can do wonders for a species. If there is a creature in the loch that's been popping up to keep the tourist trade alive than the best contender so far is the sturgeon. This mammoth fish which can grow up to 20ft(6m) and live for a hundred years would certainly account for the many 'upturned boat' sightings, but why have no carcasses been found? Many people doubt that there can be any unusual creature in the loch but it is worth noting that the existence of the mountain gorilla was only officially recognised in 1902. Before this time it was only known in reports as a hairy beast living in the jungle before science looked hard enough to find it. This, one of the most enduring of cryptozoology mysteries could be solved at anytime if the right photo is taken or the right evidence found, or it could remain forever a pilgrimage for nessie hunters and the sales of many cuddly toys and postcards. Either way, regardless of whether anything is actually in the loch or not, the Loch Ness Monster has some significance for the local economy. Dozens of hotels, boating tour operators, and merchants of stuffed animals and related trinkets owe part of their livelihood to this monster, although people visit the loch for many reasons other than to see the monster. Hence, the legend is likely to endure for quite some time .