What are the mystery ‘perfectly aligned’ holes at the bottom of the Atlantic Ocean?
Photos show that the dents punched into an otherwise flat and sandy surface connect into neat, straight lines.
A remote underwater craft piloted by the National Oceanic and Atmospheric Administration (NOAA) stumbled across unusual perforations over the weekend.
A short line of small holes were mysteriously found in the seabed.
The crew of the Okeanos Explorer said they looked manmade but could offer no further explanation as to how they got there.
Okeanos is investigating the Mid-Atlantic Ridge, a largely unexplored area of seafloor that's home to a huge submerged mountain range.
"We observed several of these sublinear sets of holes in the sediment," NOAA Ocean Exploration reported.