Laurie, you have them on your rocks, did you have to physically move them there, or did they just moved themselves??
Mine just burrowed into my sand bed and stayed. Not a problem, but the sand-sifting goby has been sifting sand into them, and I can't always be avail to blow the sand off.
They don't seem to inflate or do anything to "shake" off the sand, either...so don't really know if that's really bothering them, or just me
??
Anyone else have this problem??