Somewhat hard to tell from the pictures - they exhibit the matting characteristic of zoas, but the stalks of some appear to contain sand, which would make them palys for sure. FYI, this is about the 3rd ID thread in the past two or three weeks with what looks like very similar palys - you may want to look through some of the other ID threads and see if they are in fact the same. I have something pretty similar, but not quite the same.