Hi not sure if anyone could answer my ?'s but I have a sea hare in my tank ............Gary as the kids call him I have had him for about 2 months now to take care of my green hair problem.. He has done just fine but today i noticed that the hole in his back is splitting open and I can see in it . Now he hasn't stopped eating and he still moving around but has slowing down .for I've never had one before I don't know is this supposed to happen or is something wrong!!!!!!!HELP how can I help him!!!!!!