A video of a mysterious creature that swimming in London's River Thames has some people speculating that the Loch Ness Monster is paying the city a visit.
A YouTube user named Penn Plate took the video on March 26 while riding a cable car in Greenwich.
He wrote: "... something huge was moving under the water and then briefly surfaced. Are there whales in the Thames?? Or is it some weird submarine[?]"
Some viewers immediately suspected the strange object in the video might be Nessie, while another cheekily suggested Godzilla.
A few were more skeptical, suggesting the creature is actually a pod of dolphins or a private submarine.
The marine mammal theory seems likely since more than 49 whales, more than 2,000 seals and some 450 porpoises and dolphins have apparently been sighted in the Thames in the past ten years, according to HuffPost UK.
However, the majority of comments to the video were complaints about the lousy camera work, not about Nessie's existence.
"The only monster I see is the person who film(ed) this video vertically," is how one viewer put it.
Another griped, "Of course every cameraman who captures a weird sighting has Parkinson's."
Perhaps skepticism is natural considering there have been no confirmed reports of Nessie's existence since her first modern-day "sighting" in July, 1933.
Wildlife experts haven't offered any concrete answers about the mysterious object in the video.
Ian Tokelove of the London Wildlife Trust told the Evening Standard he was “not aware of anything that large and moving in the Thames.”
“We had a good look at the footage but it isn’t clear enough to make out what we are looking at,” Tokelove said.
The idea of Nessie swimming to London sounds appealing, but Daily Beast writer Kelly Weill points out just how difficult that would be:
"In order for the Loch Ness Monster to move to London, it would have to swim northeast to the top of Loch Ness, 12 miles through the relatively small River Ness, through the Beauly and Moray Firths, into the North Sea, down the length of Great Britain, and many miles along the Thames. The trip—almost 600 miles by land, and considerably longer by sea—would move the Loch Ness Monster between freshwater and saltwater bodies, a dangerous environmental change that would also likely see the Loch Ness Monster run aground in some shallow inlets."
Weill adds an important caveat: "The Loch Ness Monster would also have to be real."
This isn't the first time people have suspected Nessie of leaving Scotland for a change of scenery.
In October, 2013, a strange creature with “a distinctive long, curved neck bobbing up and down off the coast” was reported off the coast of Magnetic Island, Australia.
However, buzz-killing skeptics suggested the object was actually a half-sunken boat.