Yeah, he had a few more spikes/spines missing this morning. So I guess I will take him back today and get something else. I did a little research and found that crabs are predators to sea urchins. Oh well...
I got a small black sea urchin today at Aquatics in JC. I was just watching him and my emerald crab walked over and started attacking the urchin. He broke off a few spikes and ate the spikes. Has anyone else had this two together before?
I hope the urchin makes it thru the night. I might have to take him back to the store tomorrow before he becomes a $20 snack...