As Live Science reports:
The expert analysis suggests this is just a glacial deposit that the Ocean X Team “discovered” in a low-resolution sonar scan. Nothing more than rock.
Looks to be a hoax… and mind you not even an elaborate one at that.
“In this case, the team clearly has a lot to gain from an extraordinary claim,” he said. “Mr. Lindberg is already making plans to take ‘wealthy tourists’ down in his submarine to view the object. If he had used a rock hammer to break off a small piece of the object, a geologist could have determined whether it was a pillow basalt in a few minutes. But if it turned out to be a pillow basalt and not a ‘mysterious UFO-like object’, Mr. Lindberg wouldn’t have much of a business plan, would he?”
Some Articles about this supposed UFO.