Hi everyone, I have this green bubble tip anemone and it split into 3. I tried rearranging them as they were all lumped together on 1 rock very close to each other (it was quite squeezy). As I did so today, I noticed that one of the anemone's tentacles had this on it. I'm not sure if its a bruise or something else. Can someone identify what it is and tell me how i can treat it? Thanks! I attached some pictures below for your reference.