Thanks otakar and Mohawk20...
No one knows what they are, they are assumed to be some sort of fungoid spore, but their apparent automonous behaviour; the movement and flocking, has lead scientists to believe that these are an intelligent species, as yet unknown...
![Smiley :)](https://www.planetside.co.uk/forums/Smileys/fugue/smiley.png)
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J