Loch Ness Monster lake
The 24-year-old had set up her camera tripod to automatically take photos throughout the day at Windermere.
Original picture: With the creature in the distance
Ellie, from London, said: “When I set up at Lake Windermere it was business as usual to take some lovely photos of the wildlife around the lake.
"When I reviewed all the images I thought it might have been a swan or a goose, as I was looking at the image on my smartphone.
“I’m open to suggestions as to what the creature could be – I’m just glad I put the camera in the right place at the right time.”
Loch Ness: Has photographer Ellie Williams captured on camera Nessie 150 miles from home?
There have been several sightings of a monster, dubbed Bownessie, reported in Windermere before.
The first sighting was in 2006 and since then the Lake District lizard, described as a snake-like beast with humps, has appeared several more times.
James Ebdon, of Autographer camera company, said: “On closer look we thought it could be a larger animal like a horse with a saddle pack or something.