The pink could be coraline or cyano, hard to tell. Take a turkey baster and see if it blows off. I would blow on that coral too, it doesn't look very good, it looks like it’s melting. Is there any flow in the tank, and what kind of lighting do you have?
Ok this Kenya tree no longer exists sadly it’s fallen apart yet all the pieces are alive. So, I decided to place the pieces in other rock hoping they’ll take no foul smell and they open.
Anyways, upon moving it this gross isopod fell out of its internal base! Like it was inside the Kenya tree in the stump! What the heck is this and did this cause the demise of the coral?