Sea urchins-Not sure what type

[beachsweetie622]

I had both of these come in on a new piece of live rock. I was hoping someone could tell me what type they are. The first one has nearly doubled in size in the 2 weeks I've had him.

Before


After 2 weeks


The last one is a little fuzzy. I think it's a sea urchin, but I'm not sure. He is red in the center and looks like he has little polyps on his body.


Thanks so much

[HoCkEyGmC]

my guesses are that the first is a longspine and the second is a pencil urchin but its too young for me to tell. not 100% on that.

[fijiwigi]

That is one awesome hitchiker. Good score. And Welcome to AA by the way glad you joined

[MsBeanCtr]

wow! that's wild! Wish I would have scored like that. Those are great pictures too.

[beachsweetie622]

Thanks for the advice everyone! I can't wait to see then when they are full grown.