Small Gray Coral?

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Bearfan

Aquarium Advice Addict
Joined
Dec 30, 2002
Messages
3,967
Location
Franklin, TN
Hey folks-

Need an ID on these. They are gray, seem to be larger than when I got the LR. Anyone have an ID?
 
Do they close up when disturbed? Any other features? Looks like a sponge to me, gray might indicate a chicken liver sponge, but hard to tell from that pic.
 
They don't close up or move at all. They are also almost completly smooth, unlike my other sponges. Just looked up chicken liver sponge (Chondrilla nucula) and it looks pretty close maybe...I'll have to do more pix.
 
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