Small dark red spheres?

[rev138]

 

For size reference, the green stuff in the corner is chaeto.

 

I just noticed these little red spheres. I thought it might be a form of red bubble algae, but none of the pictures I found of that look similar.

 

Help?

 

Thanks.

[formerly icyuodd/icyoud2]

i'd tell you what it is, but you already know.