does anything eat live-rock?

[superb]

My rock seems to have more/larger holes in it then I remember it having in the past. Could something be widening holes and crevices?

 

[bonebrake]

I highly doubt something is eating/widening the rocks.
The only possibility I can think of is that you have some sort of extremely porous mineral rock and it is dissolving rapidly enough for you to notice a change; other than that I would say your eyes are playing tricks on you.
:joy: