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Old 09-09-2013, 01:45 AM
MrTreat MrTreat is offline
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Join Date: Nov 2012
Location: Kelowna BC
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Default ...invert?... ID help

can anyone ID the critter that owns the hard, tear-drop shape thing on this rock? when I moved the rock, I noticed that this piece closed tight where it was ...I poked at it and it's hard like bone.

Sorry, my camera kept focusing in on the rock, so it's a little out of focus.

Oh, is the critter good or bad?
Thanks!!

thingy.jpg
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fish, inverts, reef, saltwater, tank


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