A man looking at a rainbow on Michigan's Upper Peninsula over the weekend captured video of what he suggesed was a "ghost ship" on Lake Superior.
Jason Asselin says he recorded the footage of a tall object Saturday night near Marquette, Mich.
"Even if it was a ship, what could be that tall in these choppy waves?" Asselin wrote in the description of the video, which had garnered nearly 20,000 views as of Tuesday evening.
"Some people said it might be a mirage, but for that to happen conditions would have to be perfect," Asselin told CBS Detroit.
The station suggested that Asselin could have seen a specific type of mirage called a Fata Morgana, in which elongated images appear on the horizon. The station also said the object could be a large lighthouse.
More than 6,000 vessels have gone down in the Great Lakes, according to the Great Lakes Shipwreck Museum. The most famous of those is the Edmund Fitzgerald, a freighter that sank with 29 crew members on board during a Lake Superior storm in November 1975. The tragedy was immortalized by singer-songwriter Gordon Lightfoot in the hit ballad "The Wreck of the Edmund Fitzgerald."