On June 14th, 1896, Farmer John McEldowney of Cloneycaven, Ireland and his son set out to drain a boggy area near their home to clear farmland.
Towards evening, they came across a previously undiscovered submerged hole in a small pond, which they probed with sticks and rocks, apparently disturbing some unknown entity lying in its depths. No body was seen, but they described numerous snakelike tentacles which immediately shot from the depths writhing and moving with a metallic scraping sound. One of the feelers grabbed the sons leg and began dragging him into the water. Fortunately the father had a spade handy, and with some effort was able to chop the tentacle free with what he described as a small burst of lightning and a puff of smoke. The damaged feeler left behind a trail of milky liquid as it quickly withdrew into the water. The two terrified men of course immediately fled the scene.
Open examination by the village doctor, the boy was found to have suffered a number of small puncture wounds on his ankle, along with some bruising. Otherwise he was thankfully unharmed.
The next day, a group of armed farmers and the village Guardian of the Peace returned to the spot, and although there were patches of matted down grass, and furrows gouged in the mud near the waters edge, no sign of the tentacled thing could be found. Probing with large poles failed to discover anything unusual in the submerged hole. The bog was shortly after filled in, and converted to farmland with no further unusual incidents reported.
The story would have gone down as yet another country folk tale if it weren't for the fact that one of the farmers located the severed tip of the tentacle and brought it back to town. Later selling it to a student from the University of Ireland. Its whereabouts are currently unknown.
-- Exerpt from the book "Post-Medievel Folk Legend of Central Ireland" by Edmund O'Meara