Sea urchin question

[polarbear]

So I just noticed that my sea urchin was in the same spot as yesterday so I moved him and he's barely moving. Does this mean he's dying? Should I take it out in case it is? Do they release toxins if they dye?

[jcnkt_ellis]

Sea Urchins are generally slow movers and will not move until the spot they're on is completely devoid of life. Mine barely moves, especially during the day, but I can always follow the path of clean rock he leaves to know he is doing fine. As far as I know, they do not release toxins when they die.

[polarbear]

Ya they are. However I flipped this one over when I first posted and it's not moving. Mine also right them selves. Just wasn't sure if I should take it out or let it be and die

[mtfish]

If he is in a 90 gallon tank it should not be a problem. Just watch closely and if it starts to drop spines and dies, then take him out. I do not think it would overload your biofilter if it dies.