Could it possibly be a Mushroom Finger Leather Coral?? Maybe a very small one. I have been looking around the net and this is the closest thing i can find?
hard to say what it is. my kenya gets like that when its seriously aggitated. You have it in too much flow, too much light or another coral is getting at it somehow. Whatever the coral is its really unhappy with its current situation.
Well i just got this coral Earlier today, and a LFS gave it to me becasue they were not exactly sure what it was. So hopefully I will be able to make it happy again.