It's quite common for leathers to shed a muscus layer to rid themselves of algae, etc. My two leather corals do this from time to time. In fact I think they are both doing it now!
I think having a medium water current over and around them helps cut down on them shedding so often! Anyone else want to add to this!
Pic of my flexible finger leather coral:
I think having a medium water current over and around them helps cut down on them shedding so often! Anyone else want to add to this!
Pic of my flexible finger leather coral:
