Ricordia splitting?

Is my ricordia splitting or what yesterday was a entire disk now looks like its splitting i ask because i dnt know so much about this hobby only have two months in the hobby..

Ps ive been reading but i think its not enough and sorry for my english :/ its not my first language

 

Most likely. Do you have a picture? Are there two "mouths" in the center?

 

Hard to say from the images. They look healthy though. The coral in the middle is a Hydnophora and they can have very long stinging sweep tentacles, you may want to give that coral a wide berth.

 

You sure that coral have tentacle cause looks like a stone to me :/

 

Yeah, it's difficult to tell from the pictures. If it is splitting, it will have multiple nmouths like the photo below

 

It's an LPS coral. They can reach out their tentacles at night to an inch or more. Take a peak after lights out.