Identifying a brain coral (favites) and the substance it's releasing

[reefkeeper1]

Can anyone ID this brain coral for me? It looks a bit weird with those bug-like things coming out of its mouth - what are those things?

[ravelo]

I'd say it's likely a Favites coral. Those things coming out of its mouth probably are feeder tentacles, or maybe it's just stressed from being out of the water, that's why they look weird.

[zenoxa]

It's possible that the white things you're seeing are Mesenterial Filaments, which can be used as a defense mechanism, but stress is also a likely cause. Just keep a close eye on it to be safe. Good luck.

[reefkeeper1]

It's possible that the white things you're seeing are Mesenterial Filaments, which can be used as a defense mechanism, but stress is also a likely cause. Just keep a close eye on it to be safe. Good luck.

So that's a normal thing, I guess. I used to think it was pests, but how could every brain coral I've encountered have bugs, right? Now I get it.