On 27 August 2013, tourist David Elder presented a five-minute video of a "mysterious wave" in the loch. Fitter, politician David James, Peter Scott and Constance Whyte [90] "to study Loch Ness to identify the creature known as the Loch Ness Monster or determine the causes of reports of it". A survey of the literature about other hoaxes, including photographs, published by The Scientific American on 10 July 2013, indicates many others since the 1930s.

Macdonald reported his sighting to Loch Ness water bailiff Alex Campbell, and described the creature as looking like a salamander. It shows a head similar to the first photo, with a more turbulent wave pattern, and possibly taken at a different time and location in the loch. He undertook a final expedition, using sonar and an underwater camera in an attempt to find a carcass. As such, it is one of the great mysteries today not yet solved by cryptozoology, which is considered a pseudo science. When they heard a water bailiff approaching, Duke Wetherell sank the model with his foot and it is "presumably still somewhere in Loch Ness".One photograph appeared to show the head, neck, and upper torso of a plesiosaur-like animal, [108] but sceptics argue the object is a log due to the lump on its "chest" area, the mass of sediment in the full photo, and the object's log-like "skin" texture. Modern interest in the monster was sparked by a sighting on 22 July 1933, when George Spicer and his wife saw "a most extraordinary form of animal" cross the road in front of their car. However, in 1963, Maurice Burton came into "possession of two lantern slides, contact positives from th[e] original negative" and when projected onto a screen they revealed an "otter rolling at the surface in characteristic fashion.

Regarding the long size of the creature reported by Grant; it has been suggested that this was a faulty observation due to the poor light conditions. The seiche created in Loch Ness by the catastrophic 1755 Lisbon earthquake was reportedly "so violent as to threaten destruction to some houses built on the sides of it", while the 1761 aftershock caused two-foot (60 cm) waves. From the reader series Lecturas de Enigma y Misterio, a collection of graded readers set in different places around Spain and Latin America in which mystery takes center stage. for the) possibility that there just might be continues to enthrall a small number for whom eye-witness evidence outweighs all other considerations". Wind conditions can give a choppy, matt appearance to the water with calm patches appearing dark from the shore (reflecting the mountains and clouds).Piccardi noted that in the earliest recorded sighting of a creature (the Life of Saint Columba), the creature's emergence was accompanied " cum ingenti fremitu" ("with loud roaring"). Only two exposures came out clearly; the first reportedly shows a small head and back, and the second shows a similar head in a diving position.