Bubble coral ID, pls.

[shea0499]

I recently purchased a bubble coral, so my knowledge is minimal. Please help me identify the clear reddish formation on the bubble coral. It started small and continues to get bigger.

 

[Hormigaquatica]

The coral appears to be Plerogyra sinuosa- aka Bubble Coral (as opposed to pearl bubble).

As far as the red thing... dunno... sorry

 

[seapug]

that looks like cyanobacteria invading skeleton exposed by damage. common problem with the bubbles. Try to suck it off with a baster or scrape it off with a toothpick-- just be careful not to damage healthy tissue around it.