Edinburgh, Scotland ? The Loch Ness monster is back – and there’s video.

A man has captured what Nessie watchers say is possible footage of the supposed mythical creature beneath Scotland’s most mysterious lake.

“I couldn’t believe my eyes when I saw this jet black thing, about 45 feet long, moving fairly fast in the water,” said Gordon Holmes, the 55-year-old lab technician from Shipley, Yorkshire, who took the video Saturday.

Nessie watcher and marine biologist Adrian Shine viewed the video and hoped to properly analyze it in the coming months.

“I see myself as a skeptical interpreter of what happens in the loch, but I do keep an open mind about these things and there is no doubt this is some of the best footage I have seen,” said Shine, of the Loch Ness 2000 center in Drumnadrochit, on the shores of the lake.

Holmes said whatever it was moved about 6 mph and kept a fairly straight course.

“My initial thought is it could be a very big eel. They have serpentlike features and they may explain all the sightings in Loch Ness over the years.”

Loch Ness is surrounded by myth. It’s the largest inland body of water in Britain, and at about 750 feet to the bottom, it’s deeper than the North Sea.

“There are a number of possible explanations to the sightings in the loch. It could be some biological creature, it could just be the waves of the loch or it could be some psychological phenomenon in as much as we see what we want to see,” Shine said.

While many sightings can be attributed to a drop of the local whisky, legends of Scottish monsters date back to one of the founders of the Christian church in Scotland, St. Columba, who wrote of them around 565 A.D.

The Scottish media are skeptical of Nessie stories but Holmes’ footage is of such good quality that even the normally reticent BBC Scotland aired the video on its main news program Tuesday.