[Coral-List] Coral disease or bleaching??

[Nikki Taylor]

I have recently been documenting a strange appearence on coral species in the Caribbean.  Particularly on acropora sp, but also on some others....small rings of what looks like bleaching (not dead polyps, and not patches) that are approximately 2-3cm in diameter.  Does anyone have any suggestions as to what or why this is?

Nikki Taylor 
 		 	   		  
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