Urchin ok?

[shortysteve23]

Is my urchin ok he's flat a bit but moving well help!!!

 

[Michaelis88]

I think it doing well if it's still moves around lots. If you see him loss spines or not really moving or stays at the bottom of the tank, it's not good sign!

 

[mysticeel]

When their spines are flat it means he is calm. They only raise their spines for defense. If he starts loosing his pines or bristle worms become interested in him than I would be concerned.