An undulating black object has been seen over Cornwall, England, over the last few days, leaving witnesses puzzled. According to Cornwall Live, the object "has been spotted over Truro city centre, Carluddon clay tip, Fistral beach in Newquay, over the A30, above Roche Rock and by a surfer above the sea off the Cornish coast."

The object has been seen by many local residents, who have taken to social media to post their videos of it.

Surfer Kiefer Krishnan captured this footage on his Go-Pro camera and posted it to Instagram on Monday.