Sinularia white patch

[handy555]

Hi, I've had a green finger sinularia in my tank for a couple of weeks and it has seemed happy so far, but today I've come home from work and it's looking a bit more squat than usual and has this weird white patch between its left lower two fingers, is this a normal part of its mucus or shedding process please, or is this a sign that something is wrong? Sorry the photo isn't great, let me know if I need to get a better one!

 

[Mr. Mojo Rising]

white on any coral is usually not a god thing, but I can't see it in this picture, its too blue. Overall it looks healthy in this picture, if possible perhaps post another pic with white lights only