http://www.freeimages.co.uk/galleries/nature/underwater/slides/coral_closeups_2831.htm
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http://en.wikipedia.org/wiki/File:Coral_Outcrop_Flynn_Reef.jpg
http://www.photogalaxy.com/photo/demetrio/1/
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http://sumulael.wordpress.com/2011/01/09/day-09/
http://top-10-list.org/2010/01/01/largest-underwater-volcanoes/
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