I am thinking the little guy died today, Royal Urchin about the size of a golf ball. Currently the blue is faded to a grey, and he\she\it is losing tentacles to the crabs. I can't find anything about them molting or anything like that so pretty sure he is dead. I just don't want to pitch him if this is not the case? Any help out there? Water properties look good, no other problems in the tank that I can see. Let me know if picture would help or not and I can post one up.

Thanks,
BriGuy