In September 1893, London doctor Farquhar Matheson was sailing with his wife on Scotland’s Loch Alsh, between the isle of Skye and the mainland. “Our sail was up and we were going gaily along when suddenly I saw something rise out of the loch in front of us–a long, straight, necklike thing as tall as my mast.”

The thing was 200 yards away; it was not until it began to submerge that Matheson saw “it was a large sea-monster–of the saurian type, I should think.”

He likened the head and neck to those of a giraffe. He watched the creature surface again three times, at intervals or two or three minutes, as he followed it for perhaps a mile. “It was not a sea-serpent, but a much larger and more substantial beast–something of the nature of a gigantic lizard, I should think.”

He denied emphatically that he had seen only an optical illusion, noting that he had watched the creature’s head gradually descend and ascend several times, and saw the light glisten on its smooth skin.

That evening he described the event to some gentlemen, including Sir James Farrar. They laughed at first, but “when I showed them that none of their theories would fit the case, they admitted that the sea-serpent, or sea-monster, could not be altogether a myth.”