I’m not too sure what’s going on here, I have had this hammer coral for more than 6 months. This hammer has been healthy and has not thrown any signs of distress before. Yesterday however I noticed that this hammer had begun to close. I thought after some time it would open back up. However I come back today and see it’s still closed and in fact showing it’s mouth. The mouth is open and I know this can be a large sign of stress.