Urchin ID?
 

Anyone know what kind of urchin this is?

http://i24.photobucket.com/albums/c3...pszyytrmux.jpg

Rock boring urchin?

Looks like a Purple Collector Urchin.

2nd the rock boring urchin.

It's an Echinometra mathaei. Common burrowing urchin or boring urchin. They tend to come in as tiny juveniles in corals etc. Then they grow out in your tank.

Yeah im going with rock boring. I put a piece of live rock in my frag tank to test it and he was instantly burrowed into the cracks. Cool looking urchin though.

I don't know what you guys are talking about. That urchin doesn't look boring at all. It looks quite exciting to me.

Hahahaha

I have had that urchin for about 8 years now , they are really cool and my bumble bee shrimp hangs out in him . Go get a bumblebee shrimp from oceans so he can have a driver lol

Do they have a symbiotic relationship in the wild? I'll have to look into that. Seems like he'll be hiding in the rock a lot. I added a piece into the frag tank and he went right to it and burrowed

See! There's nothing boring about these urchins at all.

Lol! Yeah! Like symbiotic relationships, purple spines, white rings and weired looking chompers......how could that be boring!!!

I like the name "purple decorator velcro awesome not boring urchin" better.....or whatever kien named him...

Well, if you're taking suggestions, I would name him Bob. He looks like a Bob.

LOL

Ok then. Frag tank Bob he is!!

Ladies and gentleman....I present to you...in all his glory. ..FRAG TANK BOB!

http://i24.photobucket.com/albums/c3...pslqqcdv2p.jpg

If he does become boring then heres an alternative for him

Baked Sea Urchin with Sea Urchin Butter
12 x sea urchins in shells
1 cup unsalted butter
freshly-ground white pepper
2 tbl fish stock
1 tbl heavy cream
1 pch cayenne pepper
Coarse salt to taste
1 tsp fresh lemon juice
Seaweed (optional)
1 whl lemon halved
Method :
Heat oven to 450 degrees. Cut away the flat bottom of the sea-urchin shell with scissors; pour away liquid. Scrape out membrane with the end of a spoon's handle. Set aside the six most attractive urchins in a baking dish.
Scoop the flesh out of the remaining six to yield about 1/2 cup. Pulse in food processor for 5 to 8 seconds. Add butter, and blend until thoroughly emulsified; add more butter if necessary. Press the urchin-butter mixture through a sieve with a spatula.
Bake the whole sea urchins 4 to 5 minutes.
Meanwhile, combine stock, cream, cayenne, salt, and pepper, to taste, in a small saucepan over medium heat. Add urchin-butter mixture, stirring constantly, until resulting emulsion thickens. Adjust seasoning; add lemon juice.
Remove sea urchins from oven. Arrange them on a bed of seaweed, drizzle with Sea Urchin Butter, and garnish with lemon halves.
Serves 2.

not sure if they are symbiotic but my shrimp is always riding on the urchin .
Also my urchin goes literally everywhere he is visible quit often even though they do borough . Don't really have issues with it knocking stuff over which is nice

ive kept a rock boring urchin in my overflow for about going on 3 yrs now lol he lives in a 8 x 6 x 12 box , there's nothing in there but coraline for him to eat and i dont feed the urchin anything and often forget hes in there for months on end just to keep finding him alive and bigger than before lol i use to pick him out of there but he kept insisting on going back so stay there he did :)