I have never seen anything like this, when you say Echinata do you mean a form of Acan? I have had many differant acans and none were like this I took a couple more pics from a side angle if it helps my tablet camera is not the best. Thank you for your help.
Jim
When i first saw it i thought favia or goniastrea. Does not not look like echinata, but again it is small. Many frags will heal flesh around the cut points. Giving them an odd look until they start growing more natural.
Your pic is kinda blurry but from the look of it, it does looks like acan echinata or the enchinopora species with the name that started with letter R something can't remember maybe some of the chalice collectors can help with that