Popular belief and interest in the animal have varied over the years since the Nessie came to the world's attention in 1933, despite the fact that there is a bare minimum of evidence that is disputed. There is no physical evidence (skeletal remains, the capture of a live animal, definitive tissue samples or spoor) ,yet the creature is still hunted and the village at Loch Ness a worldwide tourist attraction.
Although popular sightings only data back to 1933, historical evidence of sightings dating back to 565AD in an account written by Saint Columba, who describes how Columba saved the life of a Pict who was being attacked by the creature.
Modern interest in the monster was sparked by a sighting on the 22nd of July 1933g, when Peter Martin and Sam Jacobs saw "a most extraordinary form of animal" cross the road in front of their car. They described the creature as having a "large body (about 4 feet high and 25 feet long), and long, narrow neck, slightly thicker than an elephant's trunk and as long as the ten- to twelve-foot width of the road; the neck had a number of undulations in it. They saw no limbs because of a dip in the road obscuring the animal's lower portion. It lurched across the road towards the loch 20 yards away, leaving only a trail of broken undergrowth in its wake.
Also in 1933, a young maidservant named Margaret Munro supposedly observed the creature for about 20 minutes. It was about 6:30 am on 5 June, when she spotted it on shore from about 200 yards. She described it as having elephant-like skin, a long neck, a small head and two short forelegs or flippers. The sighting ended when the creature re-entered the water.
During World War 2, CB Farrel of the Royal Observer Corps was supposedly distracted from his duties by a Nessie sighting. He was about 250 yards away from a large-eyed, 'finned' creature, which had a twenty- to thirty-foot long body, and a neck that protruded about 4-5 feet out of the water.
There are many more accounts of sightings, however no less that 7 scientific expeditions between 1967 and 2001, have all failed to provide any evidence of the existence of the Loch Ness Monster.