While searching for long-lost champagne, deep sea explorers have found what some think might be a UFO.  Back in 1997,  a Swedish group discovered a wreckage with ancient champagne.

The Swedish team, called the Ocean Explorer team, discovered the wreckage of a trade ship called the Jonkoping in 1997, as well as the ship’s cargo of extremely rare 1907 Heidsick Monopole Gout Americain champagne.

Millions were made by the Ocean Explorer team, as the bottles sold for approximately $13,000 each.

That discovery sent them on more missions to find more.

Their most interesting find, according to the team, was made this past week, however, on June 19, and this time it did not involve expensive alcohol.

The find in question? A circle.

While the circle did not seem hype-worthy initially, Lindberg eliminated the possibility that it could be a land mine or algae bloom.

After a continued investigation into the circle, Lindberg released a statement to local media concerning the Ocean Explorer team find:

“At 87m down, between Sweden and Finland, they saw a large circle, about 60 feet in diameter. You see a lot of weird stuff in this job but during my 18 years as a professional I have never seen anything like this. The shape is completely round … a circle.”

Some are calling it a UFO, but the team isn't agreeing so quickly.