Can't really tell, but remind me of a candy cane/frog spawn/hammer coral...
Once all the soft tissue is "lift off," it is pretty much dead, but if you are one of the luck few, there can be enough tissue left for it to grow back as little polyp.
The need relatively low nitrate (1-2ppm) to do well, moderate light (VHO), low-mid flow. Not as demanding as SPS, but in par with most of the LPS. Pretty hardy.