[samplatt]

I like the idea of an animal probing the floor for scent/sound/EM fields for prey, but you'd think we would have a seen a lot more of it if that were the case.

The article didn't mention excavating the holes to see what was underneath... My guess is maybe it's a creature that lays eggs in sand.

[sfjailbird]

The holes look to be in the middle of some kind of track, or drag mark. Which would indicate that they are made from the surface, I guess.

[yosito]

At the end of the video, they show a small portion of the holes where they dug a sample, and they said they're testing it with results pending.