I Have An Unusual Infestation In My Raised Bed

Question

The discs are about 1mm diameter and are in clumps just below the surface.

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Answer 1

These appear to be lithops. Keep the soil moist to kill them, or just pour boiling water on them a couple of times per day for a few days.

Here is an article that will explain more about these strange plants:

https://www.gardeningknowhow.com/ornamental/cacti-succulents/lithop/growing-living-stone-plants.htm

Answer 2

I don't believe they are lithops. The bed is not dry there are hundreds of them and they are between 1 and 2 mm in diameter they are too small