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#1
09-02-2010, 11:47 PM
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Read up on something called a piddock. Do these holes look like what you have?
I've never heard of a tropical piddock as I have only seen them in temperate areas, but hey, stranger things have happened. I think this is your culprit. Depending where your rock if from I'm going to guess that it's a Pholas orientalis or Petricolaria pholadiformis, but then again it could be any bivalve with an "angel wing" shell Last edited by ScubaSteve; 09-03-2010 at 12:48 AM. 
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